22288866420 has 24 divisors (see below), whose sum is σ = 62408826144. Its totient is φ = 5943697696.

The previous prime is 22288866409. The next prime is 22288866451. The reversal of 22288866420 is 2466888222.

It is a self number, because there is not a number n which added to its sum of digits gives 22288866420.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185740494 + ... + 185740613.

It is an arithmetic number, because the mean of its divisors is an integer number (2600367756).

Almost surely, 2^22288866420 is an apocalyptic number.

22288866420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22288866420 is an abundant number, since it is smaller than the sum of its proper divisors (40119959724).

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

22288866420 is a wasteful number, since it uses less digits than its factorization.

22288866420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371481119 (or 371481117 counting only the distinct ones).

The product of its (nonzero) digits is 1179648, while the sum is 48.

The spelling of 22288866420 in words is "twenty-two billion, two hundred eighty-eight million, eight hundred sixty-six thousand, four hundred twenty".