12401568 has 108 divisors (see below), whose sum is σ = 37714950. Its totient is φ = 3864576.

The previous prime is 12401563. The next prime is 12401569. The reversal of 12401568 is 86510421.

It can be written as a sum of positive squares in 3 ways, for example, as 11209104 + 1192464 = 3348^2 + 1092^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a zygodrome in base 5.

It is not an unprimeable number, because it can be changed into a prime (12401563) 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 17 ways as a sum of consecutive naturals, for example, 83158 + ... + 83306.

Almost surely, 2^12401568 is an apocalyptic number.

12401568 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12401568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18857475).

12401568 is an abundant number, since it is smaller than the sum of its proper divisors (25313382).

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

12401568 is a wasteful number, since it uses less digits than its factorization.

12401568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199 (or 171 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 12401568 is about 3521.5860063329. The cubic root of 12401568 is about 231.4686611587.

Adding to 12401568 its reverse (86510421), we get a palindrome (98911989).

The spelling of 12401568 in words is "twelve million, four hundred one thousand, five hundred sixty-eight".