23299965 has 24 divisors (see below), whose sum is σ = 43494360. Its totient is φ = 11470464.

The previous prime is 23299951. The next prime is 23299967. The reversal of 23299965 is 56999232.

It can be written as a sum of positive squares in 4 ways, for example, as 3426201 + 19873764 = 1851^2 + 4458^2 .

It is not a de Polignac number, because 23299965 - 2⁶ = 23299901 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 23299965.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23299967) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19330 + ... + 20499.

It is an arithmetic number, because the mean of its divisors is an integer number (1812265).

Almost surely, 2^23299965 is an apocalyptic number.

It is an amenable number.

23299965 is a deficient number, since it is larger than the sum of its proper divisors (20194395).

23299965 is a wasteful number, since it uses less digits than its factorization.

23299965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39853 (or 39850 counting only the distinct ones).

The product of its digits is 262440, while the sum is 45.

The square root of 23299965 is about 4827.0037290228. The cubic root of 23299965 is about 285.6176815666.

The spelling of 23299965 in words is "twenty-three million, two hundred ninety-nine thousand, nine hundred sixty-five".