23666688 has 112 divisors (see below), whose sum is σ = 70774560. Its totient is φ = 7815168.

The previous prime is 23666677. The next prime is 23666689. The reversal of 23666688 is 88666632.

It is a super-2 number, since 2×23666688² = 1120224241778688, which contains 22 as substring.

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

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (23666689) 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, 221131 + ... + 221237.

Almost surely, 2^23666688 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 23666688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35387280).

23666688 is an abundant number, since it is smaller than the sum of its proper divisors (47107872).

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

23666688 is an equidigital number, since it uses as much as digits as its factorization.

23666688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 112 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 23666688 is about 4864.8420323789. The cubic root of 23666688 is about 287.1083534266.

The spelling of 23666688 in words is "twenty-three million, six hundred sixty-six thousand, six hundred eighty-eight".