23617216 has 84 divisors (see below), whose sum is σ = 57854088. Its totient is φ = 9504768.

The previous prime is 23617213. The next prime is 23617229. The reversal of 23617216 is 61271632.

It is a super-4 number, since 4×23617216⁴ (a number of 31 digits) contains 4444 as substring.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (23617213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53091 + ... + 53533.

Almost surely, 2^23617216 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 23617216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28927044).

23617216 is an abundant number, since it is smaller than the sum of its proper divisors (34236872).

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

23617216 is a wasteful number, since it uses less digits than its factorization.

23617216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486 (or 469 counting only the distinct ones).

The product of its digits is 3024, while the sum is 28.

The square root of 23617216 is about 4859.7547263211. The cubic root of 23617216 is about 286.9081601842.

Adding to 23617216 its reverse (61271632), we get a palindrome (84888848).

The spelling of 23617216 in words is "twenty-three million, six hundred seventeen thousand, two hundred sixteen".