22665249 has 12 divisors (see below), whose sum is σ = 32930196. Its totient is φ = 15021792.

The previous prime is 22665241. The next prime is 22665277. The reversal of 22665249 is 94256622.

It can be written as a sum of positive squares in 2 ways, for example, as 12552849 + 10112400 = 3543^2 + 3180^2 .

It is not a de Polignac number, because 22665249 - 2³ = 22665241 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22665241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5722 + ... + 8835.

It is an arithmetic number, because the mean of its divisors is an integer number (2744183).

Almost surely, 2^22665249 is an apocalyptic number.

It is an amenable number.

22665249 is a deficient number, since it is larger than the sum of its proper divisors (10264947).

22665249 is a wasteful number, since it uses less digits than its factorization.

22665249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14736 (or 14733 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 22665249 is about 4760.8033985873. The cubic root of 22665249 is about 283.0002580460. Note that the first 3 decimals are identical.

The spelling of 22665249 in words is "twenty-two million, six hundred sixty-five thousand, two hundred forty-nine".