45641872 has 20 divisors (see below), whose sum is σ = 93633516. Its totient is φ = 21478400.

The previous prime is 45641861. The next prime is 45641881. The reversal of 45641872 is 27814654.

It can be written as a sum of positive squares in 2 ways, for example, as 13424896 + 32216976 = 3664^2 + 5676^2 .

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, 83629 + ... + 84172.

Almost surely, 2^45641872 is an apocalyptic number.

It is an amenable number.

45641872 is an abundant number, since it is smaller than the sum of its proper divisors (47991644).

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

45641872 is a wasteful number, since it uses less digits than its factorization.

45641872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167826 (or 167820 counting only the distinct ones).

The product of its digits is 53760, while the sum is 37.

The square root of 45641872 is about 6755.8768490848. The cubic root of 45641872 is about 357.3725158761.

It can be divided in two parts, 456418 and 72, that added together give a triangular number (456490 = T₉₅₅).

The spelling of 45641872 in words is "forty-five million, six hundred forty-one thousand, eight hundred seventy-two".