216940368 has 20 divisors (see below), whose sum is σ = 560429408. Its totient is φ = 72313440.

The previous prime is 216940363. The next prime is 216940369. The reversal of 216940368 is 863049612.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216940363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2259748 + ... + 2259843.

Almost surely, 2^216940368 is an apocalyptic number.

It is an amenable number.

216940368 is an abundant number, since it is smaller than the sum of its proper divisors (343489040).

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

216940368 is a wasteful number, since it uses less digits than its factorization.

216940368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4519602 (or 4519596 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 216940368 is about 14728.8956816185. The cubic root of 216940368 is about 600.8694505953.

The spelling of 216940368 in words is "two hundred sixteen million, nine hundred forty thousand, three hundred sixty-eight".