22664286 has 40 divisors (see below), whose sum is σ = 52434624. Its totient is φ = 7309440.

The previous prime is 22664273. The next prime is 22664287. The reversal of 22664286 is 68246622.

22664286 is a `hidden beast` number, since 2 + 2 + 6 + 642 + 8 + 6 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22664286.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22664287) 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, 2766 + ... + 7278.

Almost surely, 2^22664286 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22664286, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26217312).

22664286 is an abundant number, since it is smaller than the sum of its proper divisors (29770338).

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

22664286 is a wasteful number, since it uses less digits than its factorization.

22664286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4558 (or 4549 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 22664286 is about 4760.7022591210. The cubic root of 22664286 is about 282.9962499555.

The spelling of 22664286 in words is "twenty-two million, six hundred sixty-four thousand, two hundred eighty-six".