72966724 has 12 divisors (see below), whose sum is σ = 128885904. Its totient is φ = 36142184.

The previous prime is 72966721. The next prime is 72966731. The reversal of 72966724 is 42766927.

It is a super-2 number, since 2×72966724² = 10648285622584352, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72966721) 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, 84814 + ... + 85669.

It is an arithmetic number, because the mean of its divisors is an integer number (10740492).

Almost surely, 2^72966724 is an apocalyptic number.

It is an amenable number.

72966724 is a deficient number, since it is larger than the sum of its proper divisors (55919180).

72966724 is a wasteful number, since it uses less digits than its factorization.

72966724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170594 (or 170592 counting only the distinct ones).

The product of its digits is 254016, while the sum is 43.

The square root of 72966724 is about 8542.0561927442. The cubic root of 72966724 is about 417.8704069314.

The spelling of 72966724 in words is "seventy-two million, nine hundred sixty-six thousand, seven hundred twenty-four".