32425728 has 36 divisors (see below), whose sum is σ = 86301768. Its totient is φ = 10808320.

The previous prime is 32425717. The next prime is 32425759. The reversal of 32425728 is 82752423.

It is a congruent number.

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, 20343 + ... + 21878.

Almost surely, 2^32425728 is an apocalyptic number.

It is an amenable number.

32425728 is an abundant number, since it is smaller than the sum of its proper divisors (53876040).

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

32425728 is an equidigital number, since it uses as much as digits as its factorization.

32425728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42240 (or 42226 counting only the distinct ones).

The product of its digits is 26880, while the sum is 33.

The square root of 32425728 is about 5694.3593142688. The cubic root of 32425728 is about 318.8819313911.

It can be divided in two parts, 32425 and 728, that added together give a triangular number (33153 = T₂₅₇).

The spelling of 32425728 in words is "thirty-two million, four hundred twenty-five thousand, seven hundred twenty-eight".