216843080 has 32 divisors (see below), whose sum is σ = 509112000. Its totient is φ = 82965696.

The previous prime is 216843073. The next prime is 216843139. The reversal of 216843080 is 80348612.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116930 + ... + 118769.

It is an arithmetic number, because the mean of its divisors is an integer number (15909750).

Almost surely, 2^216843080 is an apocalyptic number.

216843080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216843080 is an abundant number, since it is smaller than the sum of its proper divisors (292268920).

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

216843080 is a wasteful number, since it uses less digits than its factorization.

216843080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235733 (or 235729 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 216843080 is about 14725.5926875627. The cubic root of 216843080 is about 600.7796161885.

The spelling of 216843080 in words is "two hundred sixteen million, eight hundred forty-three thousand, eighty".