22942978840 has 32 divisors (see below), whose sum is σ = 52392181680. Its totient is φ = 9040217472.

The previous prime is 22942978769. The next prime is 22942978871. The reversal of 22942978840 is 4887924922.

It is a happy number.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

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, 4277727 + ... + 4283086.

Almost surely, 2^22942978840 is an apocalyptic number.

22942978840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22942978840 is an abundant number, since it is smaller than the sum of its proper divisors (29449202840).

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

22942978840 is a wasteful number, since it uses less digits than its factorization.

22942978840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8560891 (or 8560887 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 55.

The spelling of 22942978840 in words is "twenty-two billion, nine hundred forty-two million, nine hundred seventy-eight thousand, eight hundred forty".