45138832 has 20 divisors (see below), whose sum is σ = 92060080. Its totient is φ = 21381408.

The previous prime is 45138817. The next prime is 45138869. The reversal of 45138832 is 23883154.

It is a happy 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, 73938 + ... + 74545.

It is an arithmetic number, because the mean of its divisors is an integer number (4603004).

Almost surely, 2^45138832 is an apocalyptic number.

It is an amenable number.

45138832 is an abundant number, since it is smaller than the sum of its proper divisors (46921248).

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

45138832 is a wasteful number, since it uses less digits than its factorization.

45138832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148510 (or 148504 counting only the distinct ones).

The product of its digits is 23040, while the sum is 34.

The square root of 45138832 is about 6718.5438898619. The cubic root of 45138832 is about 356.0547405619.

The spelling of 45138832 in words is "forty-five million, one hundred thirty-eight thousand, eight hundred thirty-two".