22504493 has 32 divisors (see below), whose sum is σ = 27648000. Its totient is φ = 18083520.

The previous prime is 22504483. The next prime is 22504529. The reversal of 22504493 is 39440522.

It is a cyclic number.

It is not a de Polignac number, because 22504493 - 2⁴ = 22504477 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22504403) 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 31 ways as a sum of consecutive naturals, for example, 284828 + ... + 284906.

It is an arithmetic number, because the mean of its divisors is an integer number (864000).

Almost surely, 2^22504493 is an apocalyptic number.

It is an amenable number.

22504493 is a deficient number, since it is larger than the sum of its proper divisors (5143507).

22504493 is a wasteful number, since it uses less digits than its factorization.

22504493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 22504493 is about 4743.8900703958. The cubic root of 22504493 is about 282.3295988575.

The spelling of 22504493 in words is "twenty-two million, five hundred four thousand, four hundred ninety-three".