72920875 has 8 divisors (see below), whose sum is σ = 91005408. Its totient is φ = 58336600.

The previous prime is 72920863. The next prime is 72920899. The reversal of 72920875 is 57802927.

It is not a de Polignac number, because 72920875 - 2⁵ = 72920843 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 291559 + ... + 291808.

It is an arithmetic number, because the mean of its divisors is an integer number (11375676).

Almost surely, 2^72920875 is an apocalyptic number.

72920875 is a deficient number, since it is larger than the sum of its proper divisors (18084533).

72920875 is an equidigital number, since it uses as much as digits as its factorization.

72920875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583382 (or 583372 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 72920875 is about 8539.3720495128. The cubic root of 72920875 is about 417.7828649510.

The spelling of 72920875 in words is "seventy-two million, nine hundred twenty thousand, eight hundred seventy-five".