216870876 has 36 divisors (see below), whose sum is σ = 551499312. Its totient is φ = 71855424.

The previous prime is 216870847. The next prime is 216870877. The reversal of 216870876 is 678078612.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216870877) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12025 + ... + 24048.

Almost surely, 2^216870876 is an apocalyptic number.

It is an amenable number.

216870876 is an abundant number, since it is smaller than the sum of its proper divisors (334628436).

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

216870876 is a wasteful number, since it uses less digits than its factorization.

216870876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36250 (or 36245 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 216870876 is about 14726.5364563430. The cubic root of 216870876 is about 600.8052853756.

The spelling of 216870876 in words is "two hundred sixteen million, eight hundred seventy thousand, eight hundred seventy-six".