404233240 has 64 divisors (see below), whose sum is σ = 925797600. Its totient is φ = 158825472.

The previous prime is 404233237. The next prime is 404233243. The reversal of 404233240 is 42332404.

It is an interprime number because it is at equal distance from previous prime (404233237) and next prime (404233243).

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404233243) 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, 1038966 + ... + 1039354.

Almost surely, 2^404233240 is an apocalyptic number.

404233240 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 404233240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (462898800).

404233240 is an abundant number, since it is smaller than the sum of its proper divisors (521564360).

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

404233240 is a wasteful number, since it uses less digits than its factorization.

404233240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796 (or 792 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 404233240 is about 20105.5524669182. The cubic root of 404233240 is about 739.3964155359.

Adding to 404233240 its reverse (42332404), we get a palindrome (446565644).

The spelling of 404233240 in words is "four hundred four million, two hundred thirty-three thousand, two hundred forty".