72856223 has 8 divisors (see below), whose sum is σ = 79664256. Its totient is φ = 66079000.

The previous prime is 72856213. The next prime is 72856247. The reversal of 72856223 is 32265827.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72856223 - 2⁸ = 72855967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72856213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2603 + ... + 12348.

It is an arithmetic number, because the mean of its divisors is an integer number (9958032).

Almost surely, 2^72856223 is an apocalyptic number.

72856223 is a deficient number, since it is larger than the sum of its proper divisors (6808033).

72856223 is a wasteful number, since it uses less digits than its factorization.

72856223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15405.

The product of its digits is 40320, while the sum is 35.

The square root of 72856223 is about 8535.5856858214. The cubic root of 72856223 is about 417.6593590082.

The spelling of 72856223 in words is "seventy-two million, eight hundred fifty-six thousand, two hundred twenty-three".