12780343 has 8 divisors (see below), whose sum is σ = 12999168. Its totient is φ = 12563544.

The previous prime is 12780323. The next prime is 12780347. The reversal of 12780343 is 34308721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12780343 - 2⁹ = 12779831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12780347) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 16830 + ... + 17572.

It is an arithmetic number, because the mean of its divisors is an integer number (1624896).

Almost surely, 2^12780343 is an apocalyptic number.

12780343 is a deficient number, since it is larger than the sum of its proper divisors (218825).

12780343 is a wasteful number, since it uses less digits than its factorization.

12780343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1013.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 12780343 is about 3574.9605592230. The cubic root of 12780343 is about 233.8016130892.

The spelling of 12780343 in words is "twelve million, seven hundred eighty thousand, three hundred forty-three".