23849565 has 16 divisors (see below), whose sum is σ = 38223168. Its totient is φ = 12698496.

The previous prime is 23849537. The next prime is 23849569. The reversal of 23849565 is 56594832.

It is not a de Polignac number, because 23849565 - 2¹⁰ = 23848541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23849569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12729 + ... + 14481.

It is an arithmetic number, because the mean of its divisors is an integer number (2388948).

Almost surely, 2^23849565 is an apocalyptic number.

It is an amenable number.

23849565 is a deficient number, since it is larger than the sum of its proper divisors (14373603).

23849565 is a wasteful number, since it uses less digits than its factorization.

23849565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2668.

The product of its digits is 259200, while the sum is 42.

The square root of 23849565 is about 4883.6016422309. The cubic root of 23849565 is about 287.8459703943.

The spelling of 23849565 in words is "twenty-three million, eight hundred forty-nine thousand, five hundred sixty-five".