404587680 has 96 divisors (see below), whose sum is σ = 1456527744. Its totient is φ = 92476416.

The previous prime is 404587669. The next prime is 404587693. The reversal of 404587680 is 86785404.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 56847 + ... + 63566.

It is an arithmetic number, because the mean of its divisors is an integer number (15172164).

Almost surely, 2^404587680 is an apocalyptic number.

404587680 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

404587680 is an abundant number, since it is smaller than the sum of its proper divisors (1051940064).

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

404587680 is a wasteful number, since it uses less digits than its factorization.

404587680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120438 (or 120430 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 42.

The square root of 404587680 is about 20114.3650160774. The cubic root of 404587680 is about 739.6124583880.

The spelling of 404587680 in words is "four hundred four million, five hundred eighty-seven thousand, six hundred eighty".