22538207232 has 480 divisors, whose sum is σ = 73513419840. Its totient is φ = 6879707136.

The previous prime is 22538207203. The next prime is 22538207243. The reversal of 22538207232 is 23270283522.

It is a happy number.

22538207232 is a `hidden beast` number, since 2 + 2 + 538 + 20 + 72 + 32 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 609140718 + ... + 609140754.

It is an arithmetic number, because the mean of its divisors is an integer number (153152958).

Almost surely, 2^22538207232 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 22538207232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36756709920).

22538207232 is an abundant number, since it is smaller than the sum of its proper divisors (50975212608).

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

22538207232 is an frugal number, since it uses more digits than its factorization.

22538207232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103 (or 59 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The spelling of 22538207232 in words is "twenty-two billion, five hundred thirty-eight million, two hundred seven thousand, two hundred thirty-two".