28562432 has 22 divisors (see below), whose sum is σ = 57099018. Its totient is φ = 14280704.

The previous prime is 28562423. The next prime is 28562441. The reversal of 28562432 is 23426582.

It is an interprime number because it is at equal distance from previous prime (28562423) and next prime (28562441).

It can be written as a sum of positive squares in only one way, i.e., 28558336 + 4096 = 5344^2 + 64^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12923 + ... + 14970.

Almost surely, 2^28562432 is an apocalyptic number.

It is an amenable number.

28562432 is a deficient number, since it is larger than the sum of its proper divisors (28536586).

28562432 is an equidigital number, since it uses as much as digits as its factorization.

28562432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27913 (or 27895 counting only the distinct ones).

The product of its digits is 23040, while the sum is 32.

The square root of 28562432 is about 5344.3832197925. The cubic root of 28562432 is about 305.6786179684.

The spelling of 28562432 in words is "twenty-eight million, five hundred sixty-two thousand, four hundred thirty-two".