72728696 has 16 divisors (see below), whose sum is σ = 137122440. Its totient is φ = 36162720.

The previous prime is 72728683. The next prime is 72728699. The reversal of 72728696 is 69682727.

It is a self number, because there is not a number n which added to its sum of digits gives 72728696.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72728699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23666 + ... + 26561.

Almost surely, 2^72728696 is an apocalyptic number.

It is an amenable number.

72728696 is a deficient number, since it is larger than the sum of its proper divisors (64393744).

72728696 is a wasteful number, since it uses less digits than its factorization.

72728696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50414 (or 50410 counting only the distinct ones).

The product of its digits is 508032, while the sum is 47.

The square root of 72728696 is about 8528.1121005765. The cubic root of 72728696 is about 417.4155273897.

The spelling of 72728696 in words is "seventy-two million, seven hundred twenty-eight thousand, six hundred ninety-six".