23645136 has 60 divisors (see below), whose sum is σ = 62690432. Its totient is φ = 7679424.

The previous prime is 23645131. The next prime is 23645161. The reversal of 23645136 is 63154632.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23645131) 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, 105921 + ... + 106143.

Almost surely, 2^23645136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23645136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31345216).

23645136 is an abundant number, since it is smaller than the sum of its proper divisors (39045296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23645136 is a wasteful number, since it uses less digits than its factorization.

23645136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328 (or 275 counting only the distinct ones).

The product of its digits is 12960, while the sum is 30.

The square root of 23645136 is about 4862.6264507980. The cubic root of 23645136 is about 287.0211754985.

Adding to 23645136 its reverse (63154632), we get a palindrome (86799768).

The spelling of 23645136 in words is "twenty-three million, six hundred forty-five thousand, one hundred thirty-six".