28554530 has 16 divisors (see below), whose sum is σ = 54103680. Its totient is φ = 10820592.

The previous prime is 28554497. The next prime is 28554551. The reversal of 28554530 is 3545582.

It is a super-2 number, since 2×28554530² = 1630722367041800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74954 + ... + 75333.

It is an arithmetic number, because the mean of its divisors is an integer number (3381480).

Almost surely, 2^28554530 is an apocalyptic number.

28554530 is a deficient number, since it is larger than the sum of its proper divisors (25549150).

28554530 is a wasteful number, since it uses less digits than its factorization.

28554530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150313.

The product of its (nonzero) digits is 24000, while the sum is 32.

The square root of 28554530 is about 5343.6438878353. The cubic root of 28554530 is about 305.6504259803.

The spelling of 28554530 in words is "twenty-eight million, five hundred fifty-four thousand, five hundred thirty".