72731068 has 12 divisors (see below), whose sum is σ = 129023440. Its totient is φ = 35867232.

The previous prime is 72731041. The next prime is 72731077. The reversal of 72731068 is 86013727.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124248 + ... + 124831.

Almost surely, 2^72731068 is an apocalyptic number.

It is an amenable number.

72731068 is a deficient number, since it is larger than the sum of its proper divisors (56292372).

72731068 is a wasteful number, since it uses less digits than its factorization.

72731068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249156 (or 249154 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 72731068 is about 8528.2511689091. The cubic root of 72731068 is about 417.4200652541.

The spelling of 72731068 in words is "seventy-two million, seven hundred thirty-one thousand, sixty-eight".