216623288 has 32 divisors (see below), whose sum is σ = 479170560. Its totient is φ = 89843040.

The previous prime is 216623273. The next prime is 216623321. The reversal of 216623288 is 882326612.

216623288 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 60656 + ... + 64127.

It is an arithmetic number, because the mean of its divisors is an integer number (14974080).

Almost surely, 2^216623288 is an apocalyptic number.

216623288 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

216623288 is an abundant number, since it is smaller than the sum of its proper divisors (262547272).

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

216623288 is a wasteful number, since it uses less digits than its factorization.

216623288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124827 (or 124823 counting only the distinct ones).

The product of its digits is 55296, while the sum is 38.

The square root of 216623288 is about 14718.1278700791. The cubic root of 216623288 is about 600.5765642971.

The spelling of 216623288 in words is "two hundred sixteen million, six hundred twenty-three thousand, two hundred eighty-eight".