45178872 has 16 divisors (see below), whose sum is σ = 112947240. Its totient is φ = 15059616.

The previous prime is 45178799. The next prime is 45178883. The reversal of 45178872 is 27887154.

It is a super-2 number, since 2×45178872² = 4082260950384768, which contains 22 as substring.

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, 941203 + ... + 941250.

Almost surely, 2^45178872 is an apocalyptic number.

It is an amenable number.

45178872 is an abundant number, since it is smaller than the sum of its proper divisors (67768368).

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

45178872 is a wasteful number, since it uses less digits than its factorization.

45178872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1882462 (or 1882458 counting only the distinct ones).

The product of its digits is 125440, while the sum is 42.

The square root of 45178872 is about 6721.5230416923. The cubic root of 45178872 is about 356.1599878468.

The spelling of 45178872 in words is "forty-five million, one hundred seventy-eight thousand, eight hundred seventy-two".