22566938 has 4 divisors (see below), whose sum is σ = 33850410. Its totient is φ = 11283468.

The previous prime is 22566919. The next prime is 22566967. The reversal of 22566938 is 83966522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 22401289 + 165649 = 4733^2 + 407^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22566895 and 22566904.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5641733 + ... + 5641736.

Almost surely, 2^22566938 is an apocalyptic number.

22566938 is a deficient number, since it is larger than the sum of its proper divisors (11283472).

22566938 is a wasteful number, since it uses less digits than its factorization.

22566938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11283471.

The product of its digits is 155520, while the sum is 41.

The square root of 22566938 is about 4750.4671349247. The cubic root of 22566938 is about 282.5904918027.

The spelling of 22566938 in words is "twenty-two million, five hundred sixty-six thousand, nine hundred thirty-eight".