22400138320 has 60 divisors (see below), whose sum is σ = 60583241844. Its totient is φ = 7680046080.

The previous prime is 22400138297. The next prime is 22400138339. The reversal of 22400138320 is 2383100422.

It can be written as a sum of positive squares in 2 ways, for example, as 14001515584 + 8398622736 = 118328^2 + 91644^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2853241 + ... + 2861080.

Almost surely, 2^22400138320 is an apocalyptic number.

22400138320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22400138320 is an abundant number, since it is smaller than the sum of its proper divisors (38183103524).

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

22400138320 is a wasteful number, since it uses less digits than its factorization.

22400138320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5714348 (or 5714335 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 22400138320 its reverse (2383100422), we get a palindrome (24783238742).

The spelling of 22400138320 in words is "twenty-two billion, four hundred million, one hundred thirty-eight thousand, three hundred twenty".