23315238 has 48 divisors (see below), whose sum is σ = 53164800. Its totient is φ = 7370352.

The previous prime is 23315233. The next prime is 23315267. The reversal of 23315238 is 83251332.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23315231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 82245 + ... + 82527.

It is an arithmetic number, because the mean of its divisors is an integer number (1107600).

Almost surely, 2^23315238 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23315238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26582400).

23315238 is an abundant number, since it is smaller than the sum of its proper divisors (29849562).

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

23315238 is a wasteful number, since it uses less digits than its factorization.

23315238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513 (or 510 counting only the distinct ones).

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

The square root of 23315238 is about 4828.5855071646. The cubic root of 23315238 is about 285.6800748800.

It can be divided in two parts, 2331 and 5238, that added together give a square (7569 = 87²).

The spelling of 23315238 in words is "twenty-three million, three hundred fifteen thousand, two hundred thirty-eight".