216996080 has 40 divisors (see below), whose sum is σ = 576591072. Its totient is φ = 74398464.

The previous prime is 216996079. The next prime is 216996089. The reversal of 216996080 is 80699612.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216996089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193187 + ... + 194306.

Almost surely, 2^216996080 is an apocalyptic number.

216996080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216996080 is an abundant number, since it is smaller than the sum of its proper divisors (359594992).

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

216996080 is a wasteful number, since it uses less digits than its factorization.

216996080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387513 (or 387507 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 216996080 is about 14730.7868085856. The cubic root of 216996080 is about 600.9208821998.

The spelling of 216996080 in words is "two hundred sixteen million, nine hundred ninety-six thousand, eighty".