220418404 has 6 divisors (see below), whose sum is σ = 385732214. Its totient is φ = 110209200.

The previous prime is 220418399. The next prime is 220418477. The reversal of 220418404 is 404814022.

220418404 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 146458404 + 73960000 = 12102^2 + 8600^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27552297 + ... + 27552304.

Almost surely, 2^220418404 is an apocalyptic number.

It is an amenable number.

220418404 is a deficient number, since it is larger than the sum of its proper divisors (165313810).

220418404 is a wasteful number, since it uses less digits than its factorization.

220418404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55104605 (or 55104603 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 25.

The square root of 220418404 is about 14846.4946704601. The cubic root of 220418404 is about 604.0635321970.

The spelling of 220418404 in words is "two hundred twenty million, four hundred eighteen thousand, four hundred four".