23891688 has 48 divisors (see below), whose sum is σ = 65126880. Its totient is φ = 7912224.

The previous prime is 23891671. The next prime is 23891689. The reversal of 23891688 is 88619832.

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

It is not an unprimeable number, because it can be changed into a prime (23891689) 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 11 ways as a sum of consecutive naturals, for example, 11031 + ... + 13017.

It is an arithmetic number, because the mean of its divisors is an integer number (1356810).

Almost surely, 2^23891688 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 23891688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32563440).

23891688 is an abundant number, since it is smaller than the sum of its proper divisors (41235192).

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

23891688 is a wasteful number, since it uses less digits than its factorization.

23891688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2166 (or 2159 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 23891688 is about 4887.9124378409. The cubic root of 23891688 is about 288.0153348316.

The spelling of 23891688 in words is "twenty-three million, eight hundred ninety-one thousand, six hundred eighty-eight".