23215872 has 144 divisors (see below), whose sum is σ = 68351360. Its totient is φ = 6967296.

The previous prime is 23215867. The next prime is 23215879. The reversal of 23215872 is 27851232.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23215879) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 539883 + ... + 539925.

Almost surely, 2^23215872 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 23215872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34175680).

23215872 is an abundant number, since it is smaller than the sum of its proper divisors (45135488).

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

23215872 is a wasteful number, since it uses less digits than its factorization.

23215872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118 (or 104 counting only the distinct ones).

The product of its digits is 6720, while the sum is 30.

The square root of 23215872 is about 4818.2851721333. The cubic root of 23215872 is about 285.2736552824.

The spelling of 23215872 in words is "twenty-three million, two hundred fifteen thousand, eight hundred seventy-two".