45531928 has 32 divisors (see below), whose sum is σ = 92383200. Its totient is φ = 20913408.

The previous prime is 45531877. The next prime is 45531947. The reversal of 45531928 is 82913554.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23293 + ... + 25171.

It is an arithmetic number, because the mean of its divisors is an integer number (2886975).

Almost surely, 2^45531928 is an apocalyptic number.

It is an amenable number.

45531928 is an abundant number, since it is smaller than the sum of its proper divisors (46851272).

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

45531928 is a wasteful number, since it uses less digits than its factorization.

45531928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2131 (or 2127 counting only the distinct ones).

The product of its digits is 43200, while the sum is 37.

The square root of 45531928 is about 6747.7350273999. The cubic root of 45531928 is about 357.0853340041.

The spelling of 45531928 in words is "forty-five million, five hundred thirty-one thousand, nine hundred twenty-eight".