23115249 has 6 divisors (see below), whose sum is σ = 33388706. Its totient is φ = 15410160.

The previous prime is 23115247. The next prime is 23115259. The reversal of 23115249 is 94251132.

It can be written as a sum of positive squares in only one way, i.e., 22896225 + 219024 = 4785^2 + 468^2 .

It is not a de Polignac number, because 23115249 - 2¹ = 23115247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23115241) 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 5 ways as a sum of consecutive naturals, for example, 1284172 + ... + 1284189.

Almost surely, 2^23115249 is an apocalyptic number.

It is an amenable number.

23115249 is a deficient number, since it is larger than the sum of its proper divisors (10273457).

23115249 is a wasteful number, since it uses less digits than its factorization.

23115249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2568367 (or 2568364 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 23115249 is about 4807.8320478153. The cubic root of 23115249 is about 284.8609108938.

The spelling of 23115249 in words is "twenty-three million, one hundred fifteen thousand, two hundred forty-nine".