218200872 has 32 divisors (see below), whose sum is σ = 564314400. Its totient is φ = 70225344.

The previous prime is 218200867. The next prime is 218200937. The reversal of 218200872 is 278002812.

It is a happy number.

It is a super-2 number, since 2×218200872² = 95223241083120768, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156058 + ... + 157449.

It is an arithmetic number, because the mean of its divisors is an integer number (17634825).

Almost surely, 2^218200872 is an apocalyptic number.

It is an amenable number.

218200872 is an abundant number, since it is smaller than the sum of its proper divisors (346113528).

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

218200872 is a wasteful number, since it uses less digits than its factorization.

218200872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313545 (or 313541 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 218200872 is about 14771.6238782336. The cubic root of 218200872 is about 602.0309620099.

The spelling of 218200872 in words is "two hundred eighteen million, two hundred thousand, eight hundred seventy-two".