401222432 has 48 divisors (see below), whose sum is σ = 856510200. Its totient is φ = 183908352.

The previous prime is 401222387. The next prime is 401222441. The reversal of 401222432 is 234222104.

It can be written as a sum of positive squares in 4 ways, for example, as 125529616 + 275692816 = 11204^2 + 16604^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58748 + ... + 65220.

Almost surely, 2^401222432 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 401222432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (428255100).

401222432 is an abundant number, since it is smaller than the sum of its proper divisors (455287768).

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

401222432 is a wasteful number, since it uses less digits than its factorization.

401222432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6645 (or 6637 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 401222432 is about 20030.5374865479. The cubic root of 401222432 is about 737.5561160786.

Adding to 401222432 its reverse (234222104), we get a palindrome (635444536).

The spelling of 401222432 in words is "four hundred one million, two hundred twenty-two thousand, four hundred thirty-two".