404422240 has 24 divisors (see below), whose sum is σ = 955447920. Its totient is φ = 161768832.

The previous prime is 404422217. The next prime is 404422259. The reversal of 404422240 is 42224404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1263660 + ... + 1263979.

It is an arithmetic number, because the mean of its divisors is an integer number (39810330).

Almost surely, 2^404422240 is an apocalyptic number.

404422240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

404422240 is an abundant number, since it is smaller than the sum of its proper divisors (551025680).

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

404422240 is a wasteful number, since it uses less digits than its factorization.

404422240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2527654 (or 2527646 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 404422240 is about 20110.2521117961. The cubic root of 404422240 is about 739.5116329689.

Adding to 404422240 its reverse (42224404), we get a palindrome (446646644).

The spelling of 404422240 in words is "four hundred four million, four hundred twenty-two thousand, two hundred forty".