220783920 has 160 divisors (see below), whose sum is σ = 789806592. Its totient is φ = 49975296.

The previous prime is 220783909. The next prime is 220783963. The reversal of 220783920 is 29387022.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 189259 + ... + 190421.

Almost surely, 2^220783920 is an apocalyptic number.

220783920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220783920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (394903296).

220783920 is an abundant number, since it is smaller than the sum of its proper divisors (569022672).

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

220783920 is a wasteful number, since it uses less digits than its factorization.

220783920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1299 (or 1293 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 220783920 is about 14858.7994131424. The cubic root of 220783920 is about 604.3972504763.

The spelling of 220783920 in words is "two hundred twenty million, seven hundred eighty-three thousand, nine hundred twenty".