23999994 has 48 divisors (see below), whose sum is σ = 56160000. Its totient is φ = 7384608.

The previous prime is 23999981. The next prime is 23999999. The reversal of 23999994 is 49999932.

It is a self number, because there is not a number n which added to its sum of digits gives 23999994.

It is not an unprimeable number, because it can be changed into a prime (23999999) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11007 + ... + 13005.

It is an arithmetic number, because the mean of its divisors is an integer number (1170000).

Almost surely, 2^23999994 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23999994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28080000).

23999994 is an abundant number, since it is smaller than the sum of its proper divisors (32160006).

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

23999994 is a wasteful number, since it uses less digits than its factorization.

23999994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2059 (or 2056 counting only the distinct ones).

The product of its digits is 1417176, while the sum is 54.

The square root of 23999994 is about 4898.9788731939. The cubic root of 23999994 is about 288.4498900240.

The spelling of 23999994 in words is "twenty-three million, nine hundred ninety-nine thousand, nine hundred ninety-four".