404567220 has 96 divisors (see below), whose sum is σ = 1165836672. Its totient is φ = 104767488.

The previous prime is 404567161. The next prime is 404567231. The reversal of 404567220 is 22765404.

It is a Harshad number since it is a multiple of its sum of digits (30).

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 31 ways as a sum of consecutive naturals, for example, 600804 + ... + 601476.

It is an arithmetic number, because the mean of its divisors is an integer number (12144132).

Almost surely, 2^404567220 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 404567220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (582918336).

404567220 is an abundant number, since it is smaller than the sum of its proper divisors (761269452).

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

404567220 is a wasteful number, since it uses less digits than its factorization.

404567220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961 (or 959 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 404567220 is about 20113.8564179026. The cubic root of 404567220 is about 739.5999907765.

The spelling of 404567220 in words is "four hundred four million, five hundred sixty-seven thousand, two hundred twenty".