210716868 has 12 divisors (see below), whose sum is σ = 491672720. Its totient is φ = 70238952.

The previous prime is 210716867. The next prime is 210716873. The reversal of 210716868 is 868617012.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (210716867) 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, 8779858 + ... + 8779881.

Almost surely, 2^210716868 is an apocalyptic number.

It is an amenable number.

210716868 is an abundant number, since it is smaller than the sum of its proper divisors (280955852).

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

210716868 is a wasteful number, since it uses less digits than its factorization.

210716868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17559746 (or 17559744 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 210716868 is about 14516.0899694098. The cubic root of 210716868 is about 595.0677775108.

The spelling of 210716868 in words is "two hundred ten million, seven hundred sixteen thousand, eight hundred sixty-eight".