404022120 has 64 divisors (see below), whose sum is σ = 1216451520. Its totient is φ = 107349504.

The previous prime is 404022107. The next prime is 404022139. The reversal of 404022120 is 21220404.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 404022120.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28012 + ... + 39908.

It is an arithmetic number, because the mean of its divisors is an integer number (19007055).

Almost surely, 2^404022120 is an apocalyptic number.

404022120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 404022120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (608225760).

404022120 is an abundant number, since it is smaller than the sum of its proper divisors (812429400).

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

404022120 is a wasteful number, since it uses less digits than its factorization.

404022120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12194 (or 12190 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 404022120 is about 20100.3014902762. The cubic root of 404022120 is about 739.2676709239.

Adding to 404022120 its reverse (21220404), we get a palindrome (425242524).

The spelling of 404022120 in words is "four hundred four million, twenty-two thousand, one hundred twenty".