404400241920 has 144 divisors (see below), whose sum is σ = 1292251891392. Its totient is φ = 107781734400.

The previous prime is 404400241919. The next prime is 404400241957. The reversal of 404400241920 is 29142004404.

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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7318395 + ... + 7373445.

It is an arithmetic number, because the mean of its divisors is an integer number (8973971468).

Almost surely, 2^404400241920 is an apocalyptic number.

404400241920 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 404400241920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (646125945696).

404400241920 is an abundant number, since it is smaller than the sum of its proper divisors (887851649472).

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

404400241920 is a wasteful number, since it uses less digits than its factorization.

404400241920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56988 (or 56974 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The spelling of 404400241920 in words is "four hundred four billion, four hundred million, two hundred forty-one thousand, nine hundred twenty".