220785132 has 36 divisors (see below), whose sum is σ = 526422680. Its totient is φ = 72020544.

The previous prime is 220785109. The next prime is 220785143. The reversal of 220785132 is 231587022.

It is a self number, because there is not a number n which added to its sum of digits gives 220785132.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22344 + ... + 30672.

Almost surely, 2^220785132 is an apocalyptic number.

It is an amenable number.

220785132 is an abundant number, since it is smaller than the sum of its proper divisors (305637548).

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

220785132 is a wasteful number, since it uses less digits than its factorization.

220785132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8430 (or 8381 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 220785132 is about 14858.8401970006. The cubic root of 220785132 is about 604.3983564266.

The spelling of 220785132 in words is "two hundred twenty million, seven hundred eighty-five thousand, one hundred thirty-two".