22645250928 has 120 divisors (see below), whose sum is σ = 70635099600. Its totient is φ = 6730463232.

The previous prime is 22645250923. The next prime is 22645250959. The reversal of 22645250928 is 82905254622.

It is a happy number.

It is a super-2 number, since 2×22645250928² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22645250923) 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, 196923 + ... + 289946.

It is an arithmetic number, because the mean of its divisors is an integer number (588625830).

Almost surely, 2^22645250928 is an apocalyptic number.

It is an amenable number.

22645250928 is an abundant number, since it is smaller than the sum of its proper divisors (47989848672).

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

22645250928 is a wasteful number, since it uses less digits than its factorization.

22645250928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486919 (or 486910 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The spelling of 22645250928 in words is "twenty-two billion, six hundred forty-five million, two hundred fifty thousand, nine hundred twenty-eight".