22776404388 has 48 divisors (see below), whose sum is σ = 53952635520. Its totient is φ = 7476985600.

The previous prime is 22776404377. The next prime is 22776404393. The reversal of 22776404388 is 88340467722.

It is a self number, because there is not a number n which added to its sum of digits gives 22776404388.

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, 787528 + ... + 815936.

It is an arithmetic number, because the mean of its divisors is an integer number (1124013240).

Almost surely, 2^22776404388 is an apocalyptic number.

It is an amenable number.

22776404388 is an abundant number, since it is smaller than the sum of its proper divisors (31176231132).

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

22776404388 is a wasteful number, since it uses less digits than its factorization.

22776404388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29428 (or 29426 counting only the distinct ones).

The product of its (nonzero) digits is 3612672, while the sum is 51.

The spelling of 22776404388 in words is "twenty-two billion, seven hundred seventy-six million, four hundred four thousand, three hundred eighty-eight".