216133596 has 120 divisors (see below), whose sum is σ = 650089440. Its totient is φ = 61337088.

The previous prime is 216133537. The next prime is 216133633. The reversal of 216133596 is 695331612.

216133596 is a `hidden beast` number, since 2 + 1 + 61 + 3 + 3 + 596 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 216133596.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 528240 + ... + 528648.

It is an arithmetic number, because the mean of its divisors is an integer number (5417412).

Almost surely, 2^216133596 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216133596, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (325044720).

216133596 is an abundant number, since it is smaller than the sum of its proper divisors (433955844).

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

216133596 is a wasteful number, since it uses less digits than its factorization.

216133596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665 (or 654 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 216133596 is about 14701.4827823591. The cubic root of 216133596 is about 600.1236745059.

The spelling of 216133596 in words is "two hundred sixteen million, one hundred thirty-three thousand, five hundred ninety-six".