72856238 has 72 divisors (see below), whose sum is σ = 141945048. Its totient is φ = 27937728.

The previous prime is 72856213. The next prime is 72856247. The reversal of 72856238 is 83265827.

It is a junction number, because it is equal to n+sod(n) for n = 72856195 and 72856204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 877745 + ... + 877827.

It is an arithmetic number, because the mean of its divisors is an integer number (1971459).

Almost surely, 2^72856238 is an apocalyptic number.

72856238 is a deficient number, since it is larger than the sum of its proper divisors (69088810).

72856238 is a wasteful number, since it uses less digits than its factorization.

72856238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178 (or 158 counting only the distinct ones).

The product of its digits is 161280, while the sum is 41.

The square root of 72856238 is about 8535.5865644957. The cubic root of 72856238 is about 417.6593876714.

The spelling of 72856238 in words is "seventy-two million, eight hundred fifty-six thousand, two hundred thirty-eight".