404088820 has 48 divisors (see below), whose sum is σ = 863372160. Its totient is φ = 158841216.

The previous prime is 404088781. The next prime is 404088821. The reversal of 404088820 is 28880404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404088821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 379609 + ... + 380671.

It is an arithmetic number, because the mean of its divisors is an integer number (17986920).

Almost surely, 2^404088820 is an apocalyptic number.

It is an amenable number.

404088820 is an abundant number, since it is smaller than the sum of its proper divisors (459283340).

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

404088820 is a wasteful number, since it uses less digits than its factorization.

404088820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1384 (or 1382 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 34.

The square root of 404088820 is about 20101.9606008966. The cubic root of 404088820 is about 739.3083505781.

The spelling of 404088820 in words is "four hundred four million, eighty-eight thousand, eight hundred twenty".