22504289 has 4 divisors (see below), whose sum is σ = 22703556. Its totient is φ = 22305024.

The previous prime is 22504283. The next prime is 22504301. The reversal of 22504289 is 98240522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7333264 + 15171025 = 2708^2 + 3895^2 .

It is a cyclic number.

It is not a de Polignac number, because 22504289 - 2¹² = 22500193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22504283) 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, 99464 + ... + 99689.

It is an arithmetic number, because the mean of its divisors is an integer number (5675889).

Almost surely, 2^22504289 is an apocalyptic number.

It is an amenable number.

22504289 is a deficient number, since it is larger than the sum of its proper divisors (199267).

22504289 is a wasteful number, since it uses less digits than its factorization.

22504289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199266.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 22504289 is about 4743.8685690057. The cubic root of 22504289 is about 282.3287457625.

The spelling of 22504289 in words is "twenty-two million, five hundred four thousand, two hundred eighty-nine".