404000220 has 48 divisors (see below), whose sum is σ = 1218218400. Its totient is φ = 99446016.

The previous prime is 404000213. The next prime is 404000263. The reversal of 404000220 is 22000404.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 404000196 and 404000205.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 258195 + ... + 259754.

It is an arithmetic number, because the mean of its divisors is an integer number (25379550).

Almost surely, 2^404000220 is an apocalyptic number.

It is an amenable number.

404000220 is an abundant number, since it is smaller than the sum of its proper divisors (814218180).

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

404000220 is a wasteful number, since it uses less digits than its factorization.

404000220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517974 (or 517972 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 404000220 is about 20099.7567149456. The cubic root of 404000220 is about 739.2543133594.

Adding to 404000220 its reverse (22000404), we get a palindrome (426000624).

The spelling of 404000220 in words is "four hundred four million, two hundred twenty", and thus it is an aban number.