32390428 has 12 divisors (see below), whose sum is σ = 64780912. Its totient is φ = 13881600.

The previous prime is 32390401. The next prime is 32390437. The reversal of 32390428 is 82409323.

32390428 is an admirable number.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 32390428.

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, 578373 + ... + 578428.

Almost surely, 2^32390428 is an apocalyptic number.

It is an amenable number.

32390428 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

32390428 is a wasteful number, since it uses less digits than its factorization.

32390428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156812 (or 1156810 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 32390428 is about 5691.2589116996. The cubic root of 32390428 is about 318.7661733175.

The spelling of 32390428 in words is "thirty-two million, three hundred ninety thousand, four hundred twenty-eight".