28828552 has 32 divisors (see below), whose sum is σ = 56237400. Its totient is φ = 13837824.

The previous prime is 28828537. The next prime is 28828561. The reversal of 28828552 is 25582882.

It can be written as a sum of positive squares in 4 ways, for example, as 18369796 + 10458756 = 4286^2 + 3234^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72418 + ... + 72814.

Almost surely, 2^28828552 is an apocalyptic number.

It is an amenable number.

28828552 is a deficient number, since it is larger than the sum of its proper divisors (27408848).

28828552 is a wasteful number, since it uses less digits than its factorization.

28828552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745 (or 741 counting only the distinct ones).

The product of its digits is 102400, while the sum is 40.

The square root of 28828552 is about 5369.2226625462. Note that the first 3 decimals coincide. The cubic root of 28828552 is about 306.6250342559.

The spelling of 28828552 in words is "twenty-eight million, eight hundred twenty-eight thousand, five hundred fifty-two".