404520432 has 40 divisors (see below), whose sum is σ = 1070504400. Its totient is φ = 131550720.

The previous prime is 404520427. The next prime is 404520437. The reversal of 404520432 is 234025404.

It is an interprime number because it is at equal distance from previous prime (404520427) and next prime (404520437).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404520437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100807 + ... + 104742.

It is an arithmetic number, because the mean of its divisors is an integer number (26762610).

Almost surely, 2^404520432 is an apocalyptic number.

It is an amenable number.

404520432 is an abundant number, since it is smaller than the sum of its proper divisors (665983968).

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

404520432 is a wasteful number, since it uses less digits than its factorization.

404520432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205601 (or 205595 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 404520432 is about 20112.6933054725. The cubic root of 404520432 is about 739.5714782189.

Adding to 404520432 its reverse (234025404), we get a palindrome (638545836).

The spelling of 404520432 in words is "four hundred four million, five hundred twenty thousand, four hundred thirty-two".