220908404 has 12 divisors (see below), whose sum is σ = 409330404. Its totient is φ = 103956864.

The previous prime is 220908403. The next prime is 220908409. The reversal of 220908404 is 404809022.

It can be written as a sum of positive squares in 2 ways, for example, as 175615504 + 45292900 = 13252^2 + 6730^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220908403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1624259 + ... + 1624394.

It is an arithmetic number, because the mean of its divisors is an integer number (34110867).

Almost surely, 2^220908404 is an apocalyptic number.

It is an amenable number.

220908404 is a deficient number, since it is larger than the sum of its proper divisors (188422000).

220908404 is a wasteful number, since it uses less digits than its factorization.

220908404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3248674 (or 3248672 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 220908404 is about 14862.9877211818. The cubic root of 220908404 is about 604.5108210229.

The spelling of 220908404 in words is "two hundred twenty million, nine hundred eight thousand, four hundred four".