220788904 has 48 divisors (see below), whose sum is σ = 483040800. Its totient is φ = 94334688.

The previous prime is 220788899. The next prime is 220788941. The reversal of 220788904 is 409887022.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 171447 + ... + 172729.

It is an arithmetic number, because the mean of its divisors is an integer number (10063350).

Almost surely, 2^220788904 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 220788904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241520400).

220788904 is an abundant number, since it is smaller than the sum of its proper divisors (262251896).

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

220788904 is a wasteful number, since it uses less digits than its factorization.

220788904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1742 (or 1731 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 220788904 is about 14858.9671242654. The cubic root of 220788904 is about 604.4017983517.

The spelling of 220788904 in words is "two hundred twenty million, seven hundred eighty-eight thousand, nine hundred four".