404500220 has 12 divisors (see below), whose sum is σ = 849450504. Its totient is φ = 161800080.

The previous prime is 404500171. The next prime is 404500231. The reversal of 404500220 is 22005404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10112486 + ... + 10112525.

It is an arithmetic number, because the mean of its divisors is an integer number (70787542).

Almost surely, 2^404500220 is an apocalyptic number.

It is an amenable number.

404500220 is an abundant number, since it is smaller than the sum of its proper divisors (444950284).

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

404500220 is a wasteful number, since it uses less digits than its factorization.

404500220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20225020 (or 20225018 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 404500220 is about 20112.1908304391. The cubic root of 404500220 is about 739.5591603675.

Adding to 404500220 its reverse (22005404), we get a palindrome (426505624).

The spelling of 404500220 in words is "four hundred four million, five hundred thousand, two hundred twenty".