23668216 has 64 divisors (see below), whose sum is σ = 55248480. Its totient is φ = 9338880.

The previous prime is 23668207. The next prime is 23668217. The reversal of 23668216 is 61286632.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23668217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18840 + ... + 20056.

Almost surely, 2^23668216 is an apocalyptic number.

23668216 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23668216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27624240).

23668216 is an abundant number, since it is smaller than the sum of its proper divisors (31580264).

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

23668216 is a wasteful number, since it uses less digits than its factorization.

23668216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264 (or 1260 counting only the distinct ones).

The product of its digits is 20736, while the sum is 34.

The square root of 23668216 is about 4864.9990750256. Note that the first 3 decimals coincide. The cubic root of 23668216 is about 287.1145321833.

The spelling of 23668216 in words is "twenty-three million, six hundred sixty-eight thousand, two hundred sixteen".