22506249 has 16 divisors (see below), whose sum is σ = 32635008. Its totient is φ = 13738752.

The previous prime is 22506247. The next prime is 22506269. The reversal of 22506249 is 94260522.

It is not a de Polignac number, because 22506249 - 2¹ = 22506247 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22506247) 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 15 ways as a sum of consecutive naturals, for example, 4077 + ... + 7850.

It is an arithmetic number, because the mean of its divisors is an integer number (2039688).

Almost surely, 2^22506249 is an apocalyptic number.

It is an amenable number.

22506249 is a deficient number, since it is larger than the sum of its proper divisors (10128759).

22506249 is a wasteful number, since it uses less digits than its factorization.

22506249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11984.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 22506249 is about 4744.0751469596. The cubic root of 22506249 is about 282.3369419524.

The spelling of 22506249 in words is "twenty-two million, five hundred six thousand, two hundred forty-nine".