22494645 has 16 divisors (see below), whose sum is σ = 39990720. Its totient is φ = 11997072.

The previous prime is 22494607. The next prime is 22494649. The reversal of 22494645 is 54649422.

22494645 is a `hidden beast` number, since 2 + 2 + 4 + 9 + 4 + 645 = 666.

It is not a de Polignac number, because 22494645 - 2⁹ = 22494133 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22494649) 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, 83179 + ... + 83448.

It is an arithmetic number, because the mean of its divisors is an integer number (2499420).

Almost surely, 2^22494645 is an apocalyptic number.

It is an amenable number.

22494645 is a deficient number, since it is larger than the sum of its proper divisors (17496075).

22494645 is a wasteful number, since it uses less digits than its factorization.

22494645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166641 (or 166635 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 22494645 is about 4742.8519901005. The cubic root of 22494645 is about 282.2884102298.

The spelling of 22494645 in words is "twenty-two million, four hundred ninety-four thousand, six hundred forty-five".