72856510 has 32 divisors (see below), whose sum is σ = 136173312. Its totient is φ = 28035840.

The previous prime is 72856493. The next prime is 72856513. The reversal of 72856510 is 1565827.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72856513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60474 + ... + 61666.

It is an arithmetic number, because the mean of its divisors is an integer number (4255416).

Almost surely, 2^72856510 is an apocalyptic number.

72856510 is a deficient number, since it is larger than the sum of its proper divisors (63316802).

72856510 is a wasteful number, since it uses less digits than its factorization.

72856510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 72856510 is about 8535.6024977737. The cubic root of 72856510 is about 417.6599074311.

The spelling of 72856510 in words is "seventy-two million, eight hundred fifty-six thousand, five hundred ten".