12730837 has 6 divisors (see below), whose sum is σ = 14809398. Its totient is φ = 10912104.

The previous prime is 12730831. The next prime is 12730853. The reversal of 12730837 is 73803721.

It can be written as a sum of positive squares in only one way, i.e., 11195716 + 1535121 = 3346^2 + 1239^2 .

It is not a de Polignac number, because 12730837 - 2³ = 12730829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12730799 and 12730808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12730831) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 129858 + ... + 129955.

It is an arithmetic number, because the mean of its divisors is an integer number (2468233).

Almost surely, 2^12730837 is an apocalyptic number.

It is an amenable number.

12730837 is a deficient number, since it is larger than the sum of its proper divisors (2078561).

12730837 is an equidigital number, since it uses as much as digits as its factorization.

12730837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259827 (or 259820 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 12730837 is about 3568.0298485299. The cubic root of 12730837 is about 233.4993374246.

The spelling of 12730837 in words is "twelve million, seven hundred thirty thousand, eight hundred thirty-seven".