22719127728 has 80 divisors (see below), whose sum is σ = 66092055552. Its totient is φ = 6662496000.

The previous prime is 22719127687. The next prime is 22719127733. The reversal of 22719127728 is 82772191722.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

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 15 ways as a sum of consecutive naturals, for example, 677643 + ... + 710378.

Almost surely, 2^22719127728 is an apocalyptic number.

It is an amenable number.

22719127728 is an abundant number, since it is smaller than the sum of its proper divisors (43372927824).

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

22719127728 is a wasteful number, since it uses less digits than its factorization.

22719127728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388074 (or 1388068 counting only the distinct ones).

The product of its digits is 395136, while the sum is 48.

The spelling of 22719127728 in words is "twenty-two billion, seven hundred nineteen million, one hundred twenty-seven thousand, seven hundred twenty-eight".