22813945928 has 8 divisors (see below), whose sum is σ = 42776148630. Its totient is φ = 11406972960.

The previous prime is 22813945907. The next prime is 22813945933. The reversal of 22813945928 is 82954931822.

It can be written as a sum of positive squares in only one way, i.e., 14703502564 + 8110443364 = 121258^2 + 90058^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×22813945928² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22813945928.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1425871613 + ... + 1425871628.

Almost surely, 2^22813945928 is an apocalyptic number.

It is an amenable number.

22813945928 is a deficient number, since it is larger than the sum of its proper divisors (19962202702).

22813945928 is a wasteful number, since it uses less digits than its factorization.

22813945928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2851743247 (or 2851743243 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 53.

The spelling of 22813945928 in words is "twenty-two billion, eight hundred thirteen million, nine hundred forty-five thousand, nine hundred twenty-eight".