216445160 has 32 divisors (see below), whose sum is σ = 488086560. Its totient is φ = 86385216.

The previous prime is 216445147. The next prime is 216445171. The reversal of 216445160 is 61544612.

216445160 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 12887 + ... + 24473.

It is an arithmetic number, because the mean of its divisors is an integer number (15252705).

Almost surely, 2^216445160 is an apocalyptic number.

216445160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216445160 is an abundant number, since it is smaller than the sum of its proper divisors (271641400).

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

216445160 is a wasteful number, since it uses less digits than its factorization.

216445160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12065 (or 12061 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 216445160 is about 14712.0753124772. The cubic root of 216445160 is about 600.4119023479.

Adding to 216445160 its reverse (61544612), we get a palindrome (277989772).

The spelling of 216445160 in words is "two hundred sixteen million, four hundred forty-five thousand, one hundred sixty".