22166474 has 20 divisors (see below), whose sum is σ = 36622770. Its totient is φ = 10062360.

The previous prime is 22166471. The next prime is 22166489. The reversal of 22166474 is 47466122.

It can be written as a sum of positive squares in only one way, i.e., 17935225 + 4231249 = 4235^2 + 2057^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22166474.

It is not an unprimeable number, because it can be changed into a prime (22166471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 28904 + ... + 29660.

Almost surely, 2^22166474 is an apocalyptic number.

22166474 is a deficient number, since it is larger than the sum of its proper divisors (14456296).

22166474 is an frugal number, since it uses more digits than its factorization.

22166474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803 (or 770 counting only the distinct ones).

The product of its digits is 16128, while the sum is 32.

The square root of 22166474 is about 4708.1285029192. The cubic root of 22166474 is about 280.9089255390.

The spelling of 22166474 in words is "twenty-two million, one hundred sixty-six thousand, four hundred seventy-four".