404053240 has 64 divisors (see below), whose sum is σ = 973296000. Its totient is φ = 150503040.

The previous prime is 404053207. The next prime is 404053249. The reversal of 404053240 is 42350404.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404053249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40335 + ... + 49345.

It is an arithmetic number, because the mean of its divisors is an integer number (15207750).

Almost surely, 2^404053240 is an apocalyptic number.

404053240 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 404053240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (486648000).

404053240 is an abundant number, since it is smaller than the sum of its proper divisors (569242760).

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

404053240 is a wasteful number, since it uses less digits than its factorization.

404053240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9100 (or 9096 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 404053240 is about 20101.0755931119. The cubic root of 404053240 is about 739.2866512537.

The spelling of 404053240 in words is "four hundred four million, fifty-three thousand, two hundred forty".