216023256 has 48 divisors (see below), whose sum is σ = 588042000. Its totient is φ = 71641152.

The previous prime is 216023237. The next prime is 216023261. The reversal of 216023256 is 652320612.

216023256 is a `hidden beast` number, since 2 + 1 + 602 + 3 + 2 + 56 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6790 + ... + 21866.

It is an arithmetic number, because the mean of its divisors is an integer number (12250875).

Almost surely, 2^216023256 is an apocalyptic number.

It is an amenable number.

216023256 is an abundant number, since it is smaller than the sum of its proper divisors (372018744).

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

216023256 is a wasteful number, since it uses less digits than its factorization.

216023256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15288 (or 15281 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 216023256 is about 14697.7296205911. The cubic root of 216023256 is about 600.0215325606.

Adding to 216023256 its reverse (652320612), we get a palindrome (868343868).

The spelling of 216023256 in words is "two hundred sixteen million, twenty-three thousand, two hundred fifty-six".