404007680 has 36 divisors (see below), whose sum is σ = 967727712. Its totient is φ = 161602560.

The previous prime is 404007649. The next prime is 404007683. The reversal of 404007680 is 86700404.

It is not an unprimeable number, because it can be changed into a prime (404007683) 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, 156536 + ... + 159095.

Almost surely, 2^404007680 is an apocalyptic number.

404007680 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

404007680 is an abundant number, since it is smaller than the sum of its proper divisors (563720032).

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

404007680 is an equidigital number, since it uses as much as digits as its factorization.

404007680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315652 (or 315638 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 404007680 is about 20099.9422884744. The cubic root of 404007680 is about 739.2588635246.

The spelling of 404007680 in words is "four hundred four million, seven thousand, six hundred eighty".