216992052 has 36 divisors (see below), whose sum is σ = 549328416. Its totient is φ = 72222480.

The previous prime is 216992047. The next prime is 216992059. The reversal of 216992052 is 250299612.

It is a happy number.

216992052 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 216991998 and 216992016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216992059) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22027 + ... + 30317.

Almost surely, 2^216992052 is an apocalyptic number.

It is an amenable number.

216992052 is an abundant number, since it is smaller than the sum of its proper divisors (332336364).

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

216992052 is a wasteful number, since it uses less digits than its factorization.

216992052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9028 (or 9023 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 216992052 is about 14730.6500874877. The cubic root of 216992052 is about 600.9171639694.

The spelling of 216992052 in words is "two hundred sixteen million, nine hundred ninety-two thousand, fifty-two".