28896556 has 48 divisors (see below), whose sum is σ = 58451904. Its totient is φ = 12393216.

The previous prime is 28896521. The next prime is 28896577. The reversal of 28896556 is 65569882.

It is a super-2 number, since 2×28896556² = 1670021897322272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43926 + ... + 44578.

It is an arithmetic number, because the mean of its divisors is an integer number (1217748).

Almost surely, 2^28896556 is an apocalyptic number.

28896556 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

28896556 is an abundant number, since it is smaller than the sum of its proper divisors (29555348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28896556 is a wasteful number, since it uses less digits than its factorization.

28896556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730 (or 728 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 49.

The square root of 28896556 is about 5375.5516926172. The cubic root of 28896556 is about 306.8659453555.

The spelling of 28896556 in words is "twenty-eight million, eight hundred ninety-six thousand, five hundred fifty-six".