23939856 has 60 divisors (see below), whose sum is σ = 67839408. Its totient is φ = 7879872.

The previous prime is 23939827. The next prime is 23939879. The reversal of 23939856 is 65893932.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10951 + ... + 12953.

Almost surely, 2^23939856 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 23939856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33919704).

23939856 is an abundant number, since it is smaller than the sum of its proper divisors (43899552).

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

23939856 is a wasteful number, since it uses less digits than its factorization.

23939856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2100 (or 2091 counting only the distinct ones).

The product of its digits is 349920, while the sum is 45.

The square root of 23939856 is about 4892.8372137238. The cubic root of 23939856 is about 288.2087606775.

The spelling of 23939856 in words is "twenty-three million, nine hundred thirty-nine thousand, eight hundred fifty-six".