72938815 has 16 divisors (see below), whose sum is σ = 95109120. Its totient is φ = 53494560.

The previous prime is 72938807. The next prime is 72938821. The reversal of 72938815 is 51883927.

It is not a de Polignac number, because 72938815 - 2³ = 72938807 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9439 + ... + 15328.

It is an arithmetic number, because the mean of its divisors is an integer number (5944320).

Almost surely, 2^72938815 is an apocalyptic number.

72938815 is a deficient number, since it is larger than the sum of its proper divisors (22170305).

72938815 is a wasteful number, since it uses less digits than its factorization.

72938815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24822.

The product of its digits is 120960, while the sum is 43.

The square root of 72938815 is about 8540.4224134407. The cubic root of 72938815 is about 417.8171231340.

The spelling of 72938815 in words is "seventy-two million, nine hundred thirty-eight thousand, eight hundred fifteen".