404122432 has 56 divisors (see below), whose sum is σ = 918423360. Its totient is φ = 172830720.

The previous prime is 404122429. The next prime is 404122529. The reversal of 404122432 is 234221404.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 415707 + ... + 416677.

Almost surely, 2^404122432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 404122432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (459211680).

404122432 is an abundant number, since it is smaller than the sum of its proper divisors (514300928).

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

404122432 is an equidigital number, since it uses as much as digits as its factorization.

404122432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1919 (or 1909 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 404122432 is about 20102.7966213659. The cubic root of 404122432 is about 739.3288485001.

Adding to 404122432 its reverse (234221404), we get a palindrome (638343836).

The spelling of 404122432 in words is "four hundred four million, one hundred twenty-two thousand, four hundred thirty-two".