404315128 has 16 divisors (see below), whose sum is σ = 866389680. Its totient is φ = 173277888.

The previous prime is 404315123. The next prime is 404315147. The reversal of 404315128 is 821513404.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 404315096 and 404315105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404315123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3609901 + ... + 3610012.

It is an arithmetic number, because the mean of its divisors is an integer number (54149355).

Almost surely, 2^404315128 is an apocalyptic number.

It is an amenable number.

404315128 is an abundant number, since it is smaller than the sum of its proper divisors (462074552).

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

404315128 is a wasteful number, since it uses less digits than its factorization.

404315128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7219926 (or 7219922 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 404315128 is about 20107.5888161659. The cubic root of 404315128 is about 739.4463401830.

The spelling of 404315128 in words is "four hundred four million, three hundred fifteen thousand, one hundred twenty-eight".