22401240232 has 96 divisors (see below), whose sum is σ = 49444191720. Its totient is φ = 9486274560.

The previous prime is 22401240229. The next prime is 22401240247. The reversal of 22401240232 is 23204210422.

It can be written as a sum of positive squares in 4 ways, for example, as 8176861476 + 14224378756 = 90426^2 + 119266^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20419908 + ... + 20421004.

Almost surely, 2^22401240232 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 22401240232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24722095860).

22401240232 is an abundant number, since it is smaller than the sum of its proper divisors (27042951488).

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

22401240232 is a wasteful number, since it uses less digits than its factorization.

22401240232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1691 (or 1680 counting only the distinct ones).

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

Adding to 22401240232 its reverse (23204210422), we get a palindrome (45605450654).

The spelling of 22401240232 in words is "twenty-two billion, four hundred one million, two hundred forty thousand, two hundred thirty-two".