28812832 has 24 divisors (see below), whose sum is σ = 58111452. Its totient is φ = 14054400.

The previous prime is 28812821. The next prime is 28812877. The reversal of 28812832 is 23821882.

It can be written as a sum of positive squares in 2 ways, for example, as 28344976 + 467856 = 5324^2 + 684^2 .

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

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, 9669 + ... + 12292.

Almost surely, 2^28812832 is an apocalyptic number.

It is an amenable number.

28812832 is an abundant number, since it is smaller than the sum of its proper divisors (29298620).

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

28812832 is a wasteful number, since it uses less digits than its factorization.

28812832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22012 (or 22004 counting only the distinct ones).

The product of its digits is 12288, while the sum is 34.

The square root of 28812832 is about 5367.7585638700. The cubic root of 28812832 is about 306.5692906545.

The spelling of 28812832 in words is "twenty-eight million, eight hundred twelve thousand, eight hundred thirty-two".