216155982 has 32 divisors (see below), whose sum is σ = 495258624. Its totient is φ = 61610400.

The previous prime is 216155959. The next prime is 216156007. The reversal of 216155982 is 289551612.

216155982 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 216155982.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12132 + ... + 24072.

It is an arithmetic number, because the mean of its divisors is an integer number (15476832).

Almost surely, 2^216155982 is an apocalyptic number.

216155982 is an abundant number, since it is smaller than the sum of its proper divisors (279102642).

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

216155982 is a wasteful number, since it uses less digits than its factorization.

216155982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12384.

The product of its digits is 43200, while the sum is 39.

The square root of 216155982 is about 14702.2441144201. The cubic root of 216155982 is about 600.1443930261.

The spelling of 216155982 in words is "two hundred sixteen million, one hundred fifty-five thousand, nine hundred eighty-two".