216984180 has 96 divisors (see below), whose sum is σ = 730920960. Its totient is φ = 46984320.

The previous prime is 216984127. The next prime is 216984191. The reversal of 216984180 is 81489612.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5616 + ... + 21575.

It is an arithmetic number, because the mean of its divisors is an integer number (7613760).

Almost surely, 2^216984180 is an apocalyptic number.

216984180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216984180 is an abundant number, since it is smaller than the sum of its proper divisors (513936780).

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

216984180 is a wasteful number, since it uses less digits than its factorization.

216984180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27229 (or 27227 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 216984180 is about 14730.3828870807. The cubic root of 216984180 is about 600.9098972253.

It can be divided in two parts, 21698 and 4180, that added together give a triangular number (25878 = T₂₂₇).

The spelling of 216984180 in words is "two hundred sixteen million, nine hundred eighty-four thousand, one hundred eighty".