22768776 has 80 divisors (see below), whose sum is σ = 65405340. Its totient is φ = 7395840.

The previous prime is 22768771. The next prime is 22768819. The reversal of 22768776 is 67786722.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 22752900 + 15876 = 4770^2 + 126^2 .

It is not an unprimeable number, because it can be changed into a prime (22768771) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 26140 + ... + 26996.

Almost surely, 2^22768776 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22768776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32702670).

22768776 is an abundant number, since it is smaller than the sum of its proper divisors (42636564).

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

22768776 is a wasteful number, since it uses less digits than its factorization.

22768776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916 (or 903 counting only the distinct ones).

The product of its digits is 395136, while the sum is 45.

The square root of 22768776 is about 4771.6638607513. The cubic root of 22768776 is about 283.4304860220.

The spelling of 22768776 in words is "twenty-two million, seven hundred sixty-eight thousand, seven hundred seventy-six".