72856630 has 64 divisors (see below), whose sum is σ = 166924800. Its totient is φ = 22696800.

The previous prime is 72856607. The next prime is 72856643. The reversal of 72856630 is 3665827.

It is a self number, because there is not a number n which added to its sum of digits gives 72856630.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36765 + ... + 38695.

It is an arithmetic number, because the mean of its divisors is an integer number (2608200).

Almost surely, 2^72856630 is an apocalyptic number.

72856630 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

72856630 is an abundant number, since it is smaller than the sum of its proper divisors (94068170).

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

72856630 is a wasteful number, since it uses less digits than its factorization.

72856630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1970 (or 1956 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 72856630 is about 8535.6095271515. The cubic root of 72856630 is about 417.6601367365.

The spelling of 72856630 in words is "seventy-two million, eight hundred fifty-six thousand, six hundred thirty".