216156790 has 16 divisors (see below), whose sum is σ = 396424368. Its totient is φ = 84831136.

The previous prime is 216156781. The next prime is 216156803. The reversal of 216156790 is 97651612.

216156790 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, 203392 + ... + 204451.

It is an arithmetic number, because the mean of its divisors is an integer number (24776523).

Almost surely, 2^216156790 is an apocalyptic number.

216156790 is a deficient number, since it is larger than the sum of its proper divisors (180267578).

216156790 is a wasteful number, since it uses less digits than its factorization.

216156790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407903.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 216156790 is about 14702.2715931927. The cubic root of 216156790 is about 600.1451408133.

The spelling of 216156790 in words is "two hundred sixteen million, one hundred fifty-six thousand, seven hundred ninety".