45720072 has 64 divisors (see below), whose sum is σ = 134481600. Its totient is φ = 14342400.

The previous prime is 45720041. The next prime is 45720083. The reversal of 45720072 is 27002754.

45720072 is a `hidden beast` number, since 457 + 200 + 7 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2554 + ... + 9897.

It is an arithmetic number, because the mean of its divisors is an integer number (2101275).

Almost surely, 2^45720072 is an apocalyptic number.

It is an amenable number.

45720072 is an abundant number, since it is smaller than the sum of its proper divisors (88761528).

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

45720072 is a wasteful number, since it uses less digits than its factorization.

45720072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12483 (or 12473 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 27.

The square root of 45720072 is about 6761.6619258877. The cubic root of 45720072 is about 357.5764995142.

The spelling of 45720072 in words is "forty-five million, seven hundred twenty thousand, seventy-two".