216902304 has 36 divisors (see below), whose sum is σ = 616816746. Its totient is φ = 72300672.

The previous prime is 216902293. The next prime is 216902417. The reversal of 216902304 is 403209612.

216902304 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 117939600 + 98962704 = 10860^2 + 9948^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 376279 + ... + 376854.

Almost surely, 2^216902304 is an apocalyptic number.

216902304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

216902304 is an abundant number, since it is smaller than the sum of its proper divisors (399914442).

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

216902304 is a wasteful number, since it uses less digits than its factorization.

216902304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753149 (or 753138 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 216902304 is about 14727.6034710336. The cubic root of 216902304 is about 600.8343060181.

The spelling of 216902304 in words is "two hundred sixteen million, nine hundred two thousand, three hundred four".