22722566 has 16 divisors (see below), whose sum is σ = 35312640. Its totient is φ = 10954440.

The previous prime is 22722563. The next prime is 22722577. The reversal of 22722566 is 66522722.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22722563) 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 7 ways as a sum of consecutive naturals, for example, 23015 + ... + 23981.

It is an arithmetic number, because the mean of its divisors is an integer number (2207040).

Almost surely, 2^22722566 is an apocalyptic number.

22722566 is a deficient number, since it is larger than the sum of its proper divisors (12590074).

22722566 is a wasteful number, since it uses less digits than its factorization.

22722566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1379.

The product of its digits is 20160, while the sum is 32.

The square root of 22722566 is about 4766.8192749463. The cubic root of 22722566 is about 283.2386122435.

The spelling of 22722566 in words is "twenty-two million, seven hundred twenty-two thousand, five hundred sixty-six".