22305249 has 6 divisors (see below), whose sum is σ = 32218706. Its totient is φ = 14870160.

The previous prime is 22305187. The next prime is 22305251. The reversal of 22305249 is 94250322.

It can be written as a sum of positive squares in only one way, i.e., 12960000 + 9345249 = 3600^2 + 3057^2 .

It is not a de Polignac number, because 22305249 - 2¹³ = 22297057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22305149) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1239172 + ... + 1239189.

Almost surely, 2^22305249 is an apocalyptic number.

It is an amenable number.

22305249 is a deficient number, since it is larger than the sum of its proper divisors (9913457).

22305249 is a wasteful number, since it uses less digits than its factorization.

22305249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2478367 (or 2478364 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 22305249 is about 4722.8433173249. The cubic root of 22305249 is about 281.4939240907.

The spelling of 22305249 in words is "twenty-two million, three hundred five thousand, two hundred forty-nine".