218034872 has 32 divisors (see below), whose sum is σ = 448279920. Its totient is φ = 98595840.

The previous prime is 218034851. The next prime is 218034881. The reversal of 218034872 is 278430812.

It is a congruent number.

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, 11048 + ... + 23624.

Almost surely, 2^218034872 is an apocalyptic number.

218034872 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

218034872 is an abundant number, since it is smaller than the sum of its proper divisors (230245048).

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

218034872 is a wasteful number, since it uses less digits than its factorization.

218034872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12791 (or 12787 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 218034872 is about 14766.0039279420. The cubic root of 218034872 is about 601.8782548698.

The spelling of 218034872 in words is "two hundred eighteen million, thirty-four thousand, eight hundred seventy-two".