23388216 has 64 divisors (see below), whose sum is σ = 60635520. Its totient is φ = 7512960.

The previous prime is 23388203. The next prime is 23388223. The reversal of 23388216 is 61288332.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135106 + ... + 135278.

It is an arithmetic number, because the mean of its divisors is an integer number (947430).

Almost surely, 2^23388216 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 23388216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30317760).

23388216 is an abundant number, since it is smaller than the sum of its proper divisors (37247304).

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

23388216 is a wasteful number, since it uses less digits than its factorization.

23388216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356 (or 352 counting only the distinct ones).

The product of its digits is 13824, while the sum is 33.

The square root of 23388216 is about 4836.1364745011. The cubic root of 23388216 is about 285.9778293082.

The spelling of 23388216 in words is "twenty-three million, three hundred eighty-eight thousand, two hundred sixteen".