12671530 has 16 divisors (see below), whose sum is σ = 23183784. Its totient is φ = 4985280.

The previous prime is 12671479. The next prime is 12671531. The reversal of 12671530 is 3517621.

It can be written as a sum of positive squares in 4 ways, for example, as 9778129 + 2893401 = 3127^2 + 1701^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12671495 and 12671504.

It is not an unprimeable number, because it can be changed into a prime (12671531) 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, 9777 + ... + 10996.

Almost surely, 2^12671530 is an apocalyptic number.

12671530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12671530 is a deficient number, since it is larger than the sum of its proper divisors (10512254).

12671530 is a wasteful number, since it uses less digits than its factorization.

12671530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20841.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 12671530 is about 3559.7092577906. The cubic root of 12671530 is about 233.1361849459.

The spelling of 12671530 in words is "twelve million, six hundred seventy-one thousand, five hundred thirty".