13391280 has 120 divisors (see below), whose sum is σ = 51416352. Its totient is φ = 3059712.

The previous prime is 13391251. The next prime is 13391293. The reversal of 13391280 is 8219331.

It is a tau number, because it is divible by the number of its divisors (120).

It is a zygodrome in base 6.

It is an unprimeable number.

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, 3712 + ... + 6368.

Almost surely, 2^13391280 is an apocalyptic number.

13391280 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 13391280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25708176).

13391280 is an abundant number, since it is smaller than the sum of its proper divisors (38025072).

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

13391280 is a wasteful number, since it uses less digits than its factorization.

13391280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2683 (or 2674 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 13391280 is about 3659.4097884768. The cubic root of 13391280 is about 237.4692407071.

The spelling of 13391280 in words is "thirteen million, three hundred ninety-one thousand, two hundred eighty".