13191340 has 24 divisors (see below), whose sum is σ = 28379232. Its totient is φ = 5147520.

The previous prime is 13191331. The next prime is 13191359. The reversal of 13191340 is 4319131.

It is a super-2 number, since 2×13191340² = 348022901991200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7224 + ... + 8863.

It is an arithmetic number, because the mean of its divisors is an integer number (1182468).

Almost surely, 2^13191340 is an apocalyptic number.

13191340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13191340 is an abundant number, since it is smaller than the sum of its proper divisors (15187892).

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

13191340 is a wasteful number, since it uses less digits than its factorization.

13191340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16137 (or 16135 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 13191340 is about 3631.9884361049. The cubic root of 13191340 is about 236.2814558304.

It can be divided in two parts, 13191 and 340, that added together give a palindrome (13531).

The spelling of 13191340 in words is "thirteen million, one hundred ninety-one thousand, three hundred forty".