23621265 has 24 divisors (see below), whose sum is σ = 41266368. Its totient is φ = 12498720.

The previous prime is 23621263. The next prime is 23621291. The reversal of 23621265 is 56212632.

It is not a de Polignac number, because 23621265 - 2¹ = 23621263 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (23621261) 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, 3892 + ... + 7898.

It is an arithmetic number, because the mean of its divisors is an integer number (1719432).

Almost surely, 2^23621265 is an apocalyptic number.

It is an amenable number.

23621265 is a deficient number, since it is larger than the sum of its proper divisors (17645103).

23621265 is a wasteful number, since it uses less digits than its factorization.

23621265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4149 (or 4146 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 23621265 is about 4860.1712932776. The cubic root of 23621265 is about 286.9245553534.

Adding to 23621265 its reverse (56212632), we get a palindrome (79833897).

The spelling of 23621265 in words is "twenty-three million, six hundred twenty-one thousand, two hundred sixty-five".