72765712 has 20 divisors (see below), whose sum is σ = 149277276. Its totient is φ = 34242560.

The previous prime is 72765697. The next prime is 72765713. The reversal of 72765712 is 21756727.

It can be written as a sum of positive squares in 2 ways, for example, as 61716736 + 11048976 = 7856^2 + 3324^2 .

It is not an unprimeable number, because it can be changed into a prime (72765713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133489 + ... + 134032.

Almost surely, 2^72765712 is an apocalyptic number.

It is an amenable number.

72765712 is an abundant number, since it is smaller than the sum of its proper divisors (76511564).

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

72765712 is a wasteful number, since it uses less digits than its factorization.

72765712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267546 (or 267540 counting only the distinct ones).

The product of its digits is 41160, while the sum is 37.

The square root of 72765712 is about 8530.2820586426. The cubic root of 72765712 is about 417.4863313201.

The spelling of 72765712 in words is "seventy-two million, seven hundred sixty-five thousand, seven hundred twelve".