23361216 has 56 divisors (see below), whose sum is σ = 62173104. Its totient is φ = 7741440.

The previous prime is 23361193. The next prime is 23361253. The reversal of 23361216 is 61216332.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 53736 + ... + 54168.

It is an arithmetic number, because the mean of its divisors is an integer number (1110234).

Almost surely, 2^23361216 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 23361216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31086552).

23361216 is an abundant number, since it is smaller than the sum of its proper divisors (38811888).

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

23361216 is a wasteful number, since it uses less digits than its factorization.

23361216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729 (or 719 counting only the distinct ones).

The product of its digits is 1296, while the sum is 24.

The square root of 23361216 is about 4833.3441838959. The cubic root of 23361216 is about 285.8677400426.

Adding to 23361216 its reverse (61216332), we get a palindrome (84577548).

The spelling of 23361216 in words is "twenty-three million, three hundred sixty-one thousand, two hundred sixteen".