12809360 has 20 divisors (see below), whose sum is σ = 29781948. Its totient is φ = 5123712.

The previous prime is 12809359. The next prime is 12809491. The reversal of 12809360 is 6390821.

It can be written as a sum of positive squares in 2 ways, for example, as 3857296 + 8952064 = 1964^2 + 2992^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79979 + ... + 80138.

Almost surely, 2^12809360 is an apocalyptic number.

12809360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12809360 is an abundant number, since it is smaller than the sum of its proper divisors (16972588).

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

12809360 is a wasteful number, since it uses less digits than its factorization.

12809360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160130 (or 160124 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 12809360 is about 3579.0166247169. The cubic root of 12809360 is about 233.9784235103.

The spelling of 12809360 in words is "twelve million, eight hundred nine thousand, three hundred sixty".