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23996 = 227857

23996 has 12 divisors (see below), whose sum is σ = 48048. Its totient is φ = 10272.

The previous prime is 23993. The next prime is 24001. The reversal of 23996 is 69932.

Adding to 23996 its sum of digits (29), we get a square (24025 = 1552).

23996 is an esthetic number in base 13, because in such base its adjacent digits differ by 1.

23996 is an admirable number.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 401 + ... + 456.

It is an arithmetic number, because the mean of its divisors is an integer number (4004).

223996 is an apocalyptic number.

It is an amenable number.

23996 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24024).

23996 is a wasteful number, since it uses less digits than its factorization.

23996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868 (or 866 counting only the distinct ones).

The product of its digits is 2916, while the sum is 29.

The square root of 23996 is about 154.9064233659. The cubic root of 23996 is about 28.8433888176.

The spelling of 23996 in words is "twenty-three thousand, nine hundred ninety-six".

Divisors: 1 2 4 7 14 28 857 1714 3428 5999 11998 23996