22919286820 has 24 divisors (see below), whose sum is σ = 48140265600. Its totient is φ = 9165855072.

The previous prime is 22919286791. The next prime is 22919286821. The reversal of 22919286820 is 2868291922.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (22919286821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12930 + ... + 214489.

It is an arithmetic number, because the mean of its divisors is an integer number (2005844400).

Almost surely, 2^22919286820 is an apocalyptic number.

22919286820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22919286820 is an abundant number, since it is smaller than the sum of its proper divisors (25220978780).

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

22919286820 is a wasteful number, since it uses less digits than its factorization.

22919286820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232467 (or 232465 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 49.

The spelling of 22919286820 in words is "twenty-two billion, nine hundred nineteen million, two hundred eighty-six thousand, eight hundred twenty".