404472240 has 60 divisors (see below), whose sum is σ = 1358355024. Its totient is φ = 107859072.

The previous prime is 404472217. The next prime is 404472241. The reversal of 404472240 is 42274404.

It is a tau number, because it is divible by the number of its divisors (60).

It is not an unprimeable number, because it can be changed into a prime (404472241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 280164 + ... + 281603.

Almost surely, 2^404472240 is an apocalyptic number.

404472240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

404472240 is an abundant number, since it is smaller than the sum of its proper divisors (953882784).

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

404472240 is a wasteful number, since it uses less digits than its factorization.

404472240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561786 (or 561777 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 27.

The square root of 404472240 is about 20111.4952203957. The cubic root of 404472240 is about 739.5421077666.

The spelling of 404472240 in words is "four hundred four million, four hundred seventy-two thousand, two hundred forty".