23087216 has 40 divisors (see below), whose sum is σ = 47794560. Its totient is φ = 10777536.

The previous prime is 23087213. The next prime is 23087221. The reversal of 23087216 is 61278032.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23087213) 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, 15095 + ... + 16553.

It is an arithmetic number, because the mean of its divisors is an integer number (1194864).

Almost surely, 2^23087216 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 23087216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23897280).

23087216 is an abundant number, since it is smaller than the sum of its proper divisors (24707344).

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

23087216 is a wasteful number, since it uses less digits than its factorization.

23087216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1533 (or 1527 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 23087216 is about 4804.9158161200. The cubic root of 23087216 is about 284.7457093627.

The spelling of 23087216 in words is "twenty-three million, eighty-seven thousand, two hundred sixteen".