13199868 has 96 divisors (see below), whose sum is σ = 38384640. Its totient is φ = 3888000.

The previous prime is 13199867. The next prime is 13199887. The reversal of 13199868 is 86899131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13199863) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48573 + ... + 48843.

It is an arithmetic number, because the mean of its divisors is an integer number (399840).

Almost surely, 2^13199868 is an apocalyptic number.

13199868 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 13199868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19192320).

13199868 is an abundant number, since it is smaller than the sum of its proper divisors (25184772).

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

13199868 is a wasteful number, since it uses less digits than its factorization.

13199868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336 (or 328 counting only the distinct ones).

The product of its digits is 93312, while the sum is 45.

The square root of 13199868 is about 3633.1622589695. The cubic root of 13199868 is about 236.3323623137.

It can be divided in two parts, 131 and 99868, that added together give a palindrome (99999).

The spelling of 13199868 in words is "thirteen million, one hundred ninety-nine thousand, eight hundred sixty-eight".