216188896 has 48 divisors (see below), whose sum is σ = 530651520. Its totient is φ = 84228480.

The previous prime is 216188887. The next prime is 216188909. The reversal of 216188896 is 698881612.

216188896 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 41406 + ... + 46333.

It is an arithmetic number, because the mean of its divisors is an integer number (11055240).

Almost surely, 2^216188896 is an apocalyptic number.

It is an amenable number.

216188896 is an abundant number, since it is smaller than the sum of its proper divisors (314462624).

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

216188896 is a wasteful number, since it uses less digits than its factorization.

216188896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87767 (or 87759 counting only the distinct ones).

The product of its digits is 331776, while the sum is 49.

The square root of 216188896 is about 14703.3634247406. The cubic root of 216188896 is about 600.1748527430.

The spelling of 216188896 in words is "two hundred sixteen million, one hundred eighty-eight thousand, eight hundred ninety-six".