72662720 has 56 divisors (see below), whose sum is σ = 186348624. Its totient is φ = 26827776.

The previous prime is 72662717. The next prime is 72662741. The reversal of 72662720 is 2726627.

It is a Harshad number since it is a multiple of its sum of digits (32).

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, 4574 + ... + 12893.

It is an arithmetic number, because the mean of its divisors is an integer number (3327654).

Almost surely, 2^72662720 is an apocalyptic number.

It is an amenable number.

72662720 is an abundant number, since it is smaller than the sum of its proper divisors (113685904).

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

72662720 is a wasteful number, since it uses less digits than its factorization.

72662720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17497 (or 17487 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 72662720 is about 8524.2430749011. The cubic root of 72662720 is about 417.2892693924.

The spelling of 72662720 in words is "seventy-two million, six hundred sixty-two thousand, seven hundred twenty".