22664780 has 12 divisors (see below), whose sum is σ = 47596080. Its totient is φ = 9065904.

The previous prime is 22664779. The next prime is 22664783. The reversal of 22664780 is 8746622.

It is a self number, because there is not a number n which added to its sum of digits gives 22664780.

It is not an unprimeable number, because it can be changed into a prime (22664783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 566600 + ... + 566639.

It is an arithmetic number, because the mean of its divisors is an integer number (3966340).

Almost surely, 2^22664780 is an apocalyptic number.

22664780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22664780 is an abundant number, since it is smaller than the sum of its proper divisors (24931300).

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

22664780 is a wasteful number, since it uses less digits than its factorization.

22664780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1133248 (or 1133246 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 22664780 is about 4760.7541419401. The cubic root of 22664780 is about 282.9983060410.

The spelling of 22664780 in words is "twenty-two million, six hundred sixty-four thousand, seven hundred eighty".