72761872 has 20 divisors (see below), whose sum is σ = 141219136. Its totient is φ = 36318240.

The previous prime is 72761813. The next prime is 72761879. The reversal of 72761872 is 27816727.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (72761879) 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, 6493 + ... + 13699.

Almost surely, 2^72761872 is an apocalyptic number.

It is an amenable number.

72761872 is a deficient number, since it is larger than the sum of its proper divisors (68457264).

72761872 is a wasteful number, since it uses less digits than its factorization.

72761872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7846 (or 7840 counting only the distinct ones).

The product of its digits is 65856, while the sum is 40.

The square root of 72761872 is about 8530.0569751907. The cubic root of 72761872 is about 417.4789873130.

The spelling of 72761872 in words is "seventy-two million, seven hundred sixty-one thousand, eight hundred seventy-two".