23138868 has 24 divisors (see below), whose sum is σ = 55853280. Its totient is φ = 7446880.

The previous prime is 23138867. The next prime is 23138881. The reversal of 23138868 is 86883132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23138867) 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, 32898 + ... + 33593.

It is an arithmetic number, because the mean of its divisors is an integer number (2327220).

Almost surely, 2^23138868 is an apocalyptic number.

It is an amenable number.

23138868 is an abundant number, since it is smaller than the sum of its proper divisors (32714412).

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

23138868 is a wasteful number, since it uses less digits than its factorization.

23138868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66527 (or 66525 counting only the distinct ones).

The product of its digits is 55296, while the sum is 39.

The square root of 23138868 is about 4810.2877252821. The cubic root of 23138868 is about 284.9579008299.

The spelling of 23138868 in words is "twenty-three million, one hundred thirty-eight thousand, eight hundred sixty-eight".