22293666 has 12 divisors (see below), whose sum is σ = 48302982. Its totient is φ = 7431216.

The previous prime is 22293643. The next prime is 22293671. The reversal of 22293666 is 66639222.

It can be written as a sum of positive squares in only one way, i.e., 21762225 + 531441 = 4665^2 + 729^2 .

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 22293666.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 619251 + ... + 619286.

Almost surely, 2^22293666 is an apocalyptic number.

22293666 is an abundant number, since it is smaller than the sum of its proper divisors (26009316).

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

22293666 is a wasteful number, since it uses less digits than its factorization.

22293666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1238545 (or 1238542 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 22293666 is about 4721.6168840769. The cubic root of 22293666 is about 281.4451895427.

The spelling of 22293666 in words is "twenty-two million, two hundred ninety-three thousand, six hundred sixty-six".