23998986 has 48 divisors (see below), whose sum is σ = 57683808. Its totient is φ = 7149600.

The previous prime is 23998967. The next prime is 23998987. The reversal of 23998986 is 68989932.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23998987) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 11085 + ... + 13071.

It is an arithmetic number, because the mean of its divisors is an integer number (1201746).

Almost surely, 2^23998986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23998986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28841904).

23998986 is an abundant number, since it is smaller than the sum of its proper divisors (33684822).

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

23998986 is a wasteful number, since it uses less digits than its factorization.

23998986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2067 (or 2064 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 54.

The square root of 23998986 is about 4898.8759935316. The cubic root of 23998986 is about 288.4458516680.

It can be divided in two parts, 239 and 98986, that added together give a square (99225 = 315²).

The spelling of 23998986 in words is "twenty-three million, nine hundred ninety-eight thousand, nine hundred eighty-six".