23513238 has 72 divisors (see below), whose sum is σ = 60501168. Its totient is φ = 6578208.

The previous prime is 23513233. The next prime is 23513249. The reversal of 23513238 is 83231532.

It is a super-2 number, since 2×23513238² = 1105744722489288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23513233) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 46495 + ... + 46997.

It is an arithmetic number, because the mean of its divisors is an integer number (840294).

Almost surely, 2^23513238 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23513238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30250584).

23513238 is an abundant number, since it is smaller than the sum of its proper divisors (36987930).

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

23513238 is a wasteful number, since it uses less digits than its factorization.

23513238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578 (or 568 counting only the distinct ones).

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

The square root of 23513238 is about 4849.0450606279. The cubic root of 23513238 is about 286.4864900476.

The spelling of 23513238 in words is "twenty-three million, five hundred thirteen thousand, two hundred thirty-eight".