23509937 has 12 divisors (see below), whose sum is σ = 25963728. Its totient is φ = 21271800.

The previous prime is 23509931. The next prime is 23509939. The reversal of 23509937 is 73990532.

It is not a de Polignac number, because 23509937 - 2⁴ = 23509921 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23509937.

It is not an unprimeable number, because it can be changed into a prime (23509931) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39758 + ... + 40344.

It is an arithmetic number, because the mean of its divisors is an integer number (2163644).

Almost surely, 2^23509937 is an apocalyptic number.

It is an amenable number.

23509937 is a deficient number, since it is larger than the sum of its proper divisors (2453791).

23509937 is a wasteful number, since it uses less digits than its factorization.

23509937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940 (or 929 counting only the distinct ones).

The product of its (nonzero) digits is 51030, while the sum is 38.

The square root of 23509937 is about 4848.7046723842. The cubic root of 23509937 is about 286.4730829028.

The spelling of 23509937 in words is "twenty-three million, five hundred nine thousand, nine hundred thirty-seven".