72815804 has 12 divisors (see below), whose sum is σ = 127504104. Its totient is φ = 36386064.

The previous prime is 72815797. The next prime is 72815819. The reversal of 72815804 is 40851827.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3779 + ... + 12645.

It is an arithmetic number, because the mean of its divisors is an integer number (10625342).

Almost surely, 2^72815804 is an apocalyptic number.

It is an amenable number.

72815804 is a deficient number, since it is larger than the sum of its proper divisors (54688300).

72815804 is a wasteful number, since it uses less digits than its factorization.

72815804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10924 (or 10922 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 72815804 is about 8533.2176815080. The cubic root of 72815804 is about 417.5821087029.

The spelling of 72815804 in words is "seventy-two million, eight hundred fifteen thousand, eight hundred four".