23989992 has 64 divisors (see below), whose sum is σ = 68402880. Its totient is φ = 6945792.

The previous prime is 23989991. The next prime is 23989997. The reversal of 23989992 is 29998932.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (23989991) 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 15 ways as a sum of consecutive naturals, for example, 3043 + ... + 7565.

It is an arithmetic number, because the mean of its divisors is an integer number (1068795).

Almost surely, 2^23989992 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 23989992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34201440).

23989992 is an abundant number, since it is smaller than the sum of its proper divisors (44412888).

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

23989992 is a wasteful number, since it uses less digits than its factorization.

23989992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4562 (or 4558 counting only the distinct ones).

The product of its digits is 629856, while the sum is 51.

The square root of 23989992 is about 4897.9579418366. The cubic root of 23989992 is about 288.4098139490.

The spelling of 23989992 in words is "twenty-three million, nine hundred eighty-nine thousand, nine hundred ninety-two".