216366156 has 18 divisors (see below), whose sum is σ = 546925652. Its totient is φ = 72122040.

The previous prime is 216366127. The next prime is 216366169. The reversal of 216366156 is 651663612.

216366156 is a `hidden beast` number, since 2 + 1 + 6 + 36 + 615 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 6010171 = 216366156 / (2 + 1 + 6 + 3 + 6 + 6 + 1 + 5 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 216366156.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3005050 + ... + 3005121.

Almost surely, 2^216366156 is an apocalyptic number.

It is an amenable number.

216366156 is an abundant number, since it is smaller than the sum of its proper divisors (330559496).

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

216366156 is a wasteful number, since it uses less digits than its factorization.

216366156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6010181 (or 6010176 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 216366156 is about 14709.3900621338. The cubic root of 216366156 is about 600.3388419409.

The spelling of 216366156 in words is "two hundred sixteen million, three hundred sixty-six thousand, one hundred fifty-six".