216570132 has 48 divisors (see below), whose sum is σ = 591035200. Its totient is φ = 68389920.

The previous prime is 216570103. The next prime is 216570143. The reversal of 216570132 is 231075612.

It is a happy number.

216570132 is a `hidden beast` number, since 2 + 1 + 657 + 0 + 1 + 3 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 216570096 and 216570105.

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, 50719 + ... + 54822.

Almost surely, 2^216570132 is an apocalyptic number.

It is an amenable number.

216570132 is an abundant number, since it is smaller than the sum of its proper divisors (374465068).

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

216570132 is a wasteful number, since it uses less digits than its factorization.

216570132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105573 (or 105565 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 216570132 is about 14716.3219589679. The cubic root of 216570132 is about 600.5274362159.

The spelling of 216570132 in words is "two hundred sixteen million, five hundred seventy thousand, one hundred thirty-two".