Except as otherwise provided in this article, a savings bank has all of the general powers granted to Maryland corporations under the Maryland General Corporation Law. In addition to the powers set forth elsewhere in this article, a savings bank may: Receive deposits of money from: Any person; The federal government or its agencies; and Any state or its political subdivisions; Pledge collateral to secure the deposits of: The federal government or its agencies; or Any state or its political subdivisions; On good security: Invest deposits; and Make loans from deposits; Subject to § 4-603 of this title: Borrow money; and Pledge its assets to secure the debt; Rent its vaults or safe-deposit boxes and, in accordance with the rental agreement, permit deposits of property; Subject to § 5-503 of this article, buy, hold, and convey real property; Subject to § 4-604 of this title, act as trustee under: The federal Self-Employed Individuals Tax Retirement Act of 1962; or The federal Employee Retirement Income Security Act of 1974; With the prior approval of the Commissioner, exercise the powers granted under § 3-207 of this article to a trust company; and Exercise all of the powers usual in carrying on a business of savings banking.