12378723 has 24 divisors (see below), whose sum is σ = 19403712. Its totient is φ = 6998544.

The previous prime is 12378713. The next prime is 12378727. The reversal of 12378723 is 32787321.

It is not a de Polignac number, because 12378723 - 2¹⁰ = 12377699 is a prime.

It is a super-2 number, since 2×12378723² = 306465566221458, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12378727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15336 + ... + 16122.

It is an arithmetic number, because the mean of its divisors is an integer number (808488).

Almost surely, 2^12378723 is an apocalyptic number.

12378723 is a deficient number, since it is larger than the sum of its proper divisors (7024989).

12378723 is a wasteful number, since it uses less digits than its factorization.

12378723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911 (or 904 counting only the distinct ones).

The product of its digits is 14112, while the sum is 33.

The square root of 12378723 is about 3518.3409442520. The cubic root of 12378723 is about 231.3264438775.

The spelling of 12378723 in words is "twelve million, three hundred seventy-eight thousand, seven hundred twenty-three".