72929312 has 12 divisors (see below), whose sum is σ = 143579646. Its totient is φ = 36464640.

The previous prime is 72929309. The next prime is 72929317. The reversal of 72929312 is 21392927.

It can be written as a sum of positive squares in only one way, i.e., 71301136 + 1628176 = 8444^2 + 1276^2 .

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (72929317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1139489 + ... + 1139552.

Almost surely, 2^72929312 is an apocalyptic number.

It is an amenable number.

72929312 is a deficient number, since it is larger than the sum of its proper divisors (70650334).

72929312 is a wasteful number, since it uses less digits than its factorization.

72929312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2279051 (or 2279043 counting only the distinct ones).

The product of its digits is 13608, while the sum is 35.

The square root of 72929312 is about 8539.8660411039. The cubic root of 72929312 is about 417.7989769267.

The spelling of 72929312 in words is "seventy-two million, nine hundred twenty-nine thousand, three hundred twelve".