404313240 has 64 divisors (see below), whose sum is σ = 1218319200. Its totient is φ = 107338752.

The previous prime is 404313229. The next prime is 404313281. The reversal of 404313240 is 42313404.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20124 + ... + 34836.

Almost surely, 2^404313240 is an apocalyptic number.

404313240 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 404313240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (609159600).

404313240 is an abundant number, since it is smaller than the sum of its proper divisors (814005960).

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

404313240 is a wasteful number, since it uses less digits than its factorization.

404313240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14956 (or 14952 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 404313240 is about 20107.5418686621. The cubic root of 404313240 is about 739.4451892022.

Adding to 404313240 its reverse (42313404), we get a palindrome (446626644).

The spelling of 404313240 in words is "four hundred four million, three hundred thirteen thousand, two hundred forty".