12724873 has 4 divisors (see below), whose sum is σ = 14542720. Its totient is φ = 10907028.

The previous prime is 12724871. The next prime is 12724879. The reversal of 12724873 is 37842721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37842721 = 7 ⋅5406103.

It is a cyclic number.

It is not a de Polignac number, because 12724873 - 2¹ = 12724871 is a prime.

It is a super-2 number, since 2×12724873² = 323844785732258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12724871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 908913 + ... + 908926.

It is an arithmetic number, because the mean of its divisors is an integer number (3635680).

Almost surely, 2^12724873 is an apocalyptic number.

It is an amenable number.

12724873 is a deficient number, since it is larger than the sum of its proper divisors (1817847).

12724873 is an equidigital number, since it uses as much as digits as its factorization.

12724873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1817846.

The product of its digits is 18816, while the sum is 34.

The square root of 12724873 is about 3567.1939952854. The cubic root of 12724873 is about 233.4628693441.

The spelling of 12724873 in words is "twelve million, seven hundred twenty-four thousand, eight hundred seventy-three".