22504993 has 8 divisors (see below), whose sum is σ = 25768512. Its totient is φ = 19253616.

The previous prime is 22504981. The next prime is 22505003. The reversal of 22504993 is 39940522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22504993 - 2⁵ = 22504961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22504393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1371 + ... + 6847.

It is an arithmetic number, because the mean of its divisors is an integer number (3221064).

Almost surely, 2^22504993 is an apocalyptic number.

It is an amenable number.

22504993 is a deficient number, since it is larger than the sum of its proper divisors (3263519).

22504993 is an equidigital number, since it uses as much as digits as its factorization.

22504993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6071.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 22504993 is about 4743.9427694693. The cubic root of 22504993 is about 282.3316897549.

The spelling of 22504993 in words is "twenty-two million, five hundred four thousand, nine hundred ninety-three".