72865206 has 24 divisors (see below), whose sum is σ = 158056704. Its totient is φ = 24260400.

The previous prime is 72865193. The next prime is 72865211. The reversal of 72865206 is 60256827.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18960 + ... + 22476.

It is an arithmetic number, because the mean of its divisors is an integer number (6585696).

Almost surely, 2^72865206 is an apocalyptic number.

72865206 is an abundant number, since it is smaller than the sum of its proper divisors (85191498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72865206 is a wasteful number, since it uses less digits than its factorization.

72865206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4676 (or 4673 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 72865206 is about 8536.1118783671. Note that the first 3 decimals coincide. The cubic root of 72865206 is about 417.6765237731.

The spelling of 72865206 in words is "seventy-two million, eight hundred sixty-five thousand, two hundred six".