23509245 has 16 divisors (see below), whose sum is σ = 38632320. Its totient is φ = 12199104.

The previous prime is 23509237. The next prime is 23509273. The reversal of 23509245 is 54290532.

It is not a de Polignac number, because 23509245 - 2³ = 23509237 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20625 + ... + 21734.

It is an arithmetic number, because the mean of its divisors is an integer number (2414520).

Almost surely, 2^23509245 is an apocalyptic number.

It is an amenable number.

23509245 is a deficient number, since it is larger than the sum of its proper divisors (15123075).

23509245 is a wasteful number, since it uses less digits than its factorization.

23509245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42404.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 23509245 is about 4848.6333125944. The cubic root of 23509245 is about 286.4702721577.

Adding to 23509245 its reverse (54290532), we get a palindrome (77799777).

The spelling of 23509245 in words is "twenty-three million, five hundred nine thousand, two hundred forty-five".