28840576 has 32 divisors (see below), whose sum is σ = 57726900. Its totient is φ = 14352384.

The previous prime is 28840561. The next prime is 28840583. The reversal of 28840576 is 67504882.

It can be written as a sum of positive squares in 2 ways, for example, as 27457600 + 1382976 = 5240^2 + 1176^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37120 + ... + 37888.

Almost surely, 2^28840576 is an apocalyptic number.

It is an amenable number.

28840576 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

28840576 is an equidigital number, since it uses as much as digits as its factorization.

28840576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076 (or 1064 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 28840576 is about 5370.3422609737. The cubic root of 28840576 is about 306.6676580518.

The spelling of 28840576 in words is "twenty-eight million, eight hundred forty thousand, five hundred seventy-six".