216789192 has 48 divisors (see below), whose sum is σ = 599639040. Its totient is φ = 70724448.

The previous prime is 216789143. The next prime is 216789217. The reversal of 216789192 is 291987612.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28648 + ... + 35415.

It is an arithmetic number, because the mean of its divisors is an integer number (12492480).

Almost surely, 2^216789192 is an apocalyptic number.

It is an amenable number.

216789192 is an abundant number, since it is smaller than the sum of its proper divisors (382849848).

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

216789192 is a wasteful number, since it uses less digits than its factorization.

216789192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64122 (or 64115 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 216789192 is about 14723.7628342758. The cubic root of 216789192 is about 600.7298451834.

The spelling of 216789192 in words is "two hundred sixteen million, seven hundred eighty-nine thousand, one hundred ninety-two".