22776912 has 60 divisors (see below), whose sum is σ = 64813684. Its totient is φ = 7464960.

The previous prime is 22776911. The next prime is 22776931. The reversal of 22776912 is 21967722.

It can be written as a sum of positive squares in 2 ways, for example, as 5934096 + 16842816 = 2436^2 + 4104^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22776911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7488 + ... + 10080.

Almost surely, 2^22776912 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 22776912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32406842).

22776912 is an abundant number, since it is smaller than the sum of its proper divisors (42036772).

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

22776912 is a wasteful number, since it uses less digits than its factorization.

22776912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2668 (or 2659 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 22776912 is about 4772.5163174158. The cubic root of 22776912 is about 283.4642415450.

The spelling of 22776912 in words is "twenty-two million, seven hundred seventy-six thousand, nine hundred twelve".