23536140 has 24 divisors (see below), whose sum is σ = 65901360. Its totient is φ = 6276288.

The previous prime is 23536129. The next prime is 23536141. The reversal of 23536140 is 4163532.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 23536140.

It is not an unprimeable number, because it can be changed into a prime (23536141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196075 + ... + 196194.

It is an arithmetic number, because the mean of its divisors is an integer number (2745890).

Almost surely, 2^23536140 is an apocalyptic number.

23536140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23536140 is an abundant number, since it is smaller than the sum of its proper divisors (42365220).

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

23536140 is a wasteful number, since it uses less digits than its factorization.

23536140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392281 (or 392279 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 23536140 is about 4851.4059817748. The cubic root of 23536140 is about 286.5794729106.

Adding to 23536140 its reverse (4163532), we get a palindrome (27699672).

The spelling of 23536140 in words is "twenty-three million, five hundred thirty-six thousand, one hundred forty".