12783140 has 12 divisors (see below), whose sum is σ = 26844636. Its totient is φ = 5113248.

The previous prime is 12783139. The next prime is 12783151. The reversal of 12783140 is 4138721.

It can be written as a sum of positive squares in 2 ways, for example, as 2696164 + 10086976 = 1642^2 + 3176^2 .

It is a zygodrome in base 3.

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, 319559 + ... + 319598.

It is an arithmetic number, because the mean of its divisors is an integer number (2237053).

Almost surely, 2^12783140 is an apocalyptic number.

12783140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12783140 is an abundant number, since it is smaller than the sum of its proper divisors (14061496).

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

12783140 is a wasteful number, since it uses less digits than its factorization.

12783140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639166 (or 639164 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 12783140 is about 3575.3517309490. The cubic root of 12783140 is about 233.8186678065.

The spelling of 12783140 in words is "twelve million, seven hundred eighty-three thousand, one hundred forty".