220389904 has 40 divisors (see below), whose sum is σ = 516716928. Its totient is φ = 88896000.

The previous prime is 220389901. The next prime is 220389907. The reversal of 220389904 is 409983022.

It is an interprime number because it is at equal distance from previous prime (220389901) and next prime (220389907).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (220389901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55972 + ... + 59779.

Almost surely, 2^220389904 is an apocalyptic number.

It is an amenable number.

220389904 is an abundant number, since it is smaller than the sum of its proper divisors (296327024).

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

220389904 is a wasteful number, since it uses less digits than its factorization.

220389904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115783 (or 115777 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 220389904 is about 14845.5348169071. The cubic root of 220389904 is about 604.0374960276.

The spelling of 220389904 in words is "two hundred twenty million, three hundred eighty-nine thousand, nine hundred four".