13156340 has 24 divisors (see below), whose sum is σ = 27701352. Its totient is φ = 5248640.

The previous prime is 13156337. The next prime is 13156357. The reversal of 13156340 is 4365131.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1350244 + 11806096 = 1162^2 + 3436^2 .

It is a congruent number.

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, 10550 + ... + 11730.

It is an arithmetic number, because the mean of its divisors is an integer number (1154223).

Almost surely, 2^13156340 is an apocalyptic number.

13156340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13156340 is an abundant number, since it is smaller than the sum of its proper divisors (14545012).

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

13156340 is a wasteful number, since it uses less digits than its factorization.

13156340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1747 (or 1745 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 13156340 is about 3627.1669385348. The cubic root of 13156340 is about 236.0722990209.

The spelling of 13156340 in words is "thirteen million, one hundred fifty-six thousand, three hundred forty".