216963522 has 32 divisors (see below), whose sum is σ = 488103360. Its totient is φ = 72319716.

The previous prime is 216963511. The next prime is 216963541. The reversal of 216963522 is 225369612.

216963522 is a `hidden beast` number, since 2 + 16 + 9 + 635 + 2 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20428 + ... + 29175.

It is an arithmetic number, because the mean of its divisors is an integer number (15253230).

Almost surely, 2^216963522 is an apocalyptic number.

216963522 is an abundant number, since it is smaller than the sum of its proper divisors (271139838).

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

216963522 is an frugal number, since it uses more digits than its factorization.

216963522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49626 (or 49608 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 216963522 is about 14729.6816666213. The cubic root of 216963522 is about 600.8908267250.

The spelling of 216963522 in words is "two hundred sixteen million, nine hundred sixty-three thousand, five hundred twenty-two".