22288888920 has 64 divisors (see below), whose sum is σ = 67556049120. Its totient is φ = 5882425344.

The previous prime is 22288888907. The next prime is 22288888981. The reversal of 22288888920 is 2988888222.

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 945787 + ... + 969066.

Almost surely, 2^22288888920 is an apocalyptic number.

22288888920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22288888920 is an abundant number, since it is smaller than the sum of its proper divisors (45267160200).

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

22288888920 is a wasteful number, since it uses less digits than its factorization.

22288888920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1914964 (or 1914960 counting only the distinct ones).

The product of its (nonzero) digits is 4718592, while the sum is 57.

The spelling of 22288888920 in words is "twenty-two billion, two hundred eighty-eight million, eight hundred eighty-eight thousand, nine hundred twenty".