13399680 has 128 divisors (see below), whose sum is σ = 48862080. Its totient is φ = 3059712.

The previous prime is 13399679. The next prime is 13399681. The reversal of 13399680 is 8699331.

It is an interprime number because it is at equal distance from previous prime (13399679) and next prime (13399681).

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (13399681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12942 + ... + 13938.

It is an arithmetic number, because the mean of its divisors is an integer number (381735).

Almost surely, 2^13399680 is an apocalyptic number.

13399680 is a gapful number since it is divisible by the number (10) 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 13399680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24431040).

13399680 is an abundant number, since it is smaller than the sum of its proper divisors (35462400).

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

13399680 is an equidigital number, since it uses as much as digits as its factorization.

13399680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026 (or 1014 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 13399680 is about 3660.5573346145. The cubic root of 13399680 is about 237.5188830785.

The spelling of 13399680 in words is "thirteen million, three hundred ninety-nine thousand, six hundred eighty".