22645324928 has 72 divisors (see below), whose sum is σ = 46257474555. Its totient is φ = 11042596608.

The previous prime is 22645324913. The next prime is 22645324931. The reversal of 22645324928 is 82942354622.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 11322662464 + 11322662464 = 106408^2 + 106408^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=106408.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian 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 8 ways as a sum of consecutive naturals, for example, 80018675 + ... + 80018957.

Almost surely, 2^22645324928 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 22645324928

22645324928 is an abundant number, since it is smaller than the sum of its proper divisors (23612149627).

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

22645324928 is an frugal number, since it uses more digits than its factorization.

22645324928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674 (or 332 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 47.

The spelling of 22645324928 in words is "twenty-two billion, six hundred forty-five million, three hundred twenty-four thousand, nine hundred twenty-eight".