72931036 has 6 divisors (see below), whose sum is σ = 127629320. Its totient is φ = 36465516.

The previous prime is 72931031. The next prime is 72931039. The reversal of 72931036 is 63013927.

It is a junction number, because it is equal to n+sod(n) for n = 72930989 and 72931007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72931031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9116376 + ... + 9116383.

Almost surely, 2^72931036 is an apocalyptic number.

It is an amenable number.

72931036 is a deficient number, since it is larger than the sum of its proper divisors (54698284).

72931036 is a wasteful number, since it uses less digits than its factorization.

72931036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18232763 (or 18232761 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 72931036 is about 8539.9669788589. The cubic root of 72931036 is about 417.8022690633.

The spelling of 72931036 in words is "seventy-two million, nine hundred thirty-one thousand, thirty-six".