72856586 has 16 divisors (see below), whose sum is σ = 119354688. Its totient is φ = 33079200.

The previous prime is 72856561. The next prime is 72856607. The reversal of 72856586 is 68565827.

It is a self number, because there is not a number n which added to its sum of digits gives 72856586.

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, 30371 + ... + 32681.

It is an arithmetic number, because the mean of its divisors is an integer number (7459668).

Almost surely, 2^72856586 is an apocalyptic number.

72856586 is a deficient number, since it is larger than the sum of its proper divisors (46498102).

72856586 is a wasteful number, since it uses less digits than its factorization.

72856586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3757.

The product of its digits is 806400, while the sum is 47.

The square root of 72856586 is about 8535.6069497137. The cubic root of 72856586 is about 417.6600526579.

It can be divided in two parts, 72 and 856586, that added together give a palindrome (856658).

The spelling of 72856586 in words is "seventy-two million, eight hundred fifty-six thousand, five hundred eighty-six".