23963856 has 80 divisors (see below), whose sum is σ = 71793024. Its totient is φ = 6746112.

The previous prime is 23963839. The next prime is 23963879. The reversal of 23963856 is 65836932.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 24040 + ... + 25016.

Almost surely, 2^23963856 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 23963856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35896512).

23963856 is an abundant number, since it is smaller than the sum of its proper divisors (47829168).

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

23963856 is a wasteful number, since it uses less digits than its factorization.

23963856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1068 (or 1062 counting only the distinct ones).

The product of its digits is 233280, while the sum is 42.

The square root of 23963856 is about 4895.2891640842. The cubic root of 23963856 is about 288.3050394532.

The spelling of 23963856 in words is "twenty-three million, nine hundred sixty-three thousand, eight hundred fifty-six".