22855866 has 32 divisors (see below), whose sum is σ = 51480576. Its totient is φ = 6702000.

The previous prime is 22855853. The next prime is 22855867. The reversal of 22855866 is 66855822.

It is a super-2 number, since 2×22855866² = 1044781221219912, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22855867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3540 + ... + 7631.

It is an arithmetic number, because the mean of its divisors is an integer number (1608768).

Almost surely, 2^22855866 is an apocalyptic number.

22855866 is an abundant number, since it is smaller than the sum of its proper divisors (28624710).

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

22855866 is a wasteful number, since it uses less digits than its factorization.

22855866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11218.

The product of its digits is 230400, while the sum is 42.

The square root of 22855866 is about 4780.7808985562. The cubic root of 22855866 is about 283.7913977649.

The spelling of 22855866 in words is "twenty-two million, eight hundred fifty-five thousand, eight hundred sixty-six".