331944928 has 24 divisors (see below), whose sum is σ = 746876592. Its totient is φ = 142262016.

The previous prime is 331944913. The next prime is 331944929. The reversal of 331944928 is 829449133.

It is a super-2 number, since 2×331944928² = 220374870449850368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331944929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 740725 + ... + 741172.

It is an arithmetic number, because the mean of its divisors is an integer number (31119858).

Almost surely, 2^331944928 is an apocalyptic number.

It is an amenable number.

331944928 is an abundant number, since it is smaller than the sum of its proper divisors (414931664).

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

331944928 is a wasteful number, since it uses less digits than its factorization.

331944928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1481914 (or 1481906 counting only the distinct ones).

The product of its digits is 186624, while the sum is 43.

The square root of 331944928 is about 18219.3558612812. The cubic root of 331944928 is about 692.3972681867.

The spelling of 331944928 in words is "three hundred thirty-one million, nine hundred forty-four thousand, nine hundred twenty-eight".