23909688 has 128 divisors (see below), whose sum is σ = 75168000. Its totient is φ = 6975360.

The previous prime is 23909681. The next prime is 23909689. The reversal of 23909688 is 88690932.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23909681) 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 31 ways as a sum of consecutive naturals, for example, 68731 + ... + 69077.

It is an arithmetic number, because the mean of its divisors is an integer number (587250).

Almost surely, 2^23909688 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 23909688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37584000).

23909688 is an abundant number, since it is smaller than the sum of its proper divisors (51258312).

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

23909688 is a wasteful number, since it uses less digits than its factorization.

23909688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402 (or 392 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 23909688 is about 4889.7533680136. The cubic root of 23909688 is about 288.0876469348.

The spelling of 23909688 in words is "twenty-three million, nine hundred nine thousand, six hundred eighty-eight".