22504229 has 4 divisors (see below), whose sum is σ = 24550080. Its totient is φ = 20458380.

The previous prime is 22504217. The next prime is 22504253. The reversal of 22504229 is 92240522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22504229 - 2⁴ = 22504213 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22504198 and 22504207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22504259) 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 3 ways as a sum of consecutive naturals, for example, 1022909 + ... + 1022930.

It is an arithmetic number, because the mean of its divisors is an integer number (6137520).

Almost surely, 2^22504229 is an apocalyptic number.

It is an amenable number.

22504229 is a deficient number, since it is larger than the sum of its proper divisors (2045851).

22504229 is a wasteful number, since it uses less digits than its factorization.

22504229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2045850.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 22504229 is about 4743.8622450489. The cubic root of 22504229 is about 282.3284948512.

The spelling of 22504229 in words is "twenty-two million, five hundred four thousand, two hundred twenty-nine".