12780723 has 8 divisors (see below), whose sum is σ = 17102736. Its totient is φ = 8489600.

The previous prime is 12780707. The next prime is 12780731. The reversal of 12780723 is 32708721.

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 12780723 - 2⁴ = 12780707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12780743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6738 + ... + 8423.

It is an arithmetic number, because the mean of its divisors is an integer number (2137842).

Almost surely, 2^12780723 is an apocalyptic number.

12780723 is a deficient number, since it is larger than the sum of its proper divisors (4322013).

12780723 is a wasteful number, since it uses less digits than its factorization.

12780723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15445.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 12780723 is about 3575.0137062674. The cubic root of 12780723 is about 233.8039302866.

The spelling of 12780723 in words is "twelve million, seven hundred eighty thousand, seven hundred twenty-three".