23642253 has 16 divisors (see below), whose sum is σ = 35131200. Its totient is φ = 15714000.

The previous prime is 23642249. The next prime is 23642261. The reversal of 23642253 is 35224632.

23642253 is a `hidden beast` number, since 236 + 422 + 5 + 3 = 666.

It is not a de Polignac number, because 23642253 - 2² = 23642249 is a prime.

It is a super-2 number, since 2×23642253² = 1117912253832018, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23642153) 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, 9378 + ... + 11628.

It is an arithmetic number, because the mean of its divisors is an integer number (2195700).

Almost surely, 2^23642253 is an apocalyptic number.

It is an amenable number.

23642253 is a deficient number, since it is larger than the sum of its proper divisors (11488947).

23642253 is a wasteful number, since it uses less digits than its factorization.

23642253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2649 (or 2643 counting only the distinct ones).

The product of its digits is 8640, while the sum is 27.

The square root of 23642253 is about 4862.3299970282. The cubic root of 23642253 is about 287.0095097352.

Adding to 23642253 its reverse (35224632), we get a palindrome (58866885).

The spelling of 23642253 in words is "twenty-three million, six hundred forty-two thousand, two hundred fifty-three".