22504005 has 48 divisors (see below), whose sum is σ = 43130880. Its totient is φ = 10796544.

The previous prime is 22503979. The next prime is 22504043. The reversal of 22504005 is 50040522.

It is not a de Polignac number, because 22504005 - 2⁵ = 22503973 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16956 + ... + 18234.

It is an arithmetic number, because the mean of its divisors is an integer number (898560).

Almost surely, 2^22504005 is an apocalyptic number.

It is an amenable number.

22504005 is a deficient number, since it is larger than the sum of its proper divisors (20626875).

22504005 is a wasteful number, since it uses less digits than its factorization.

22504005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330 (or 1327 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 22504005 is about 4743.8386355356. The cubic root of 22504005 is about 282.3275581119.

Adding to 22504005 its reverse (50040522), we get a palindrome (72544527).

The spelling of 22504005 in words is "twenty-two million, five hundred four thousand, five".