22920351372 has 72 divisors (see below), whose sum is σ = 60092930352. Its totient is φ = 7359984000.

The previous prime is 22920351359. The next prime is 22920351379. The reversal of 22920351372 is 27315302922.

It is a happy number.

It is a super-4 number, since 4×22920351372⁴ (a number of 43 digits) contains 4444 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (22920351379) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49347 + ... + 219717.

Almost surely, 2^22920351372 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 22920351372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30046465176).

22920351372 is an abundant number, since it is smaller than the sum of its proper divisors (37172578980).

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

22920351372 is a wasteful number, since it uses less digits than its factorization.

22920351372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170519 (or 170514 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The spelling of 22920351372 in words is "twenty-two billion, nine hundred twenty million, three hundred fifty-one thousand, three hundred seventy-two".