12870826 has 4 divisors (see below), whose sum is σ = 19306242. Its totient is φ = 6435412.

The previous prime is 12870799. The next prime is 12870827. The reversal of 12870826 is 62807821.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 10465225 + 2405601 = 3235^2 + 1551^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12870791 and 12870800.

It is not an unprimeable number, because it can be changed into a prime (12870827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3217705 + ... + 3217708.

Almost surely, 2^12870826 is an apocalyptic number.

12870826 is a deficient number, since it is larger than the sum of its proper divisors (6435416).

12870826 is an equidigital number, since it uses as much as digits as its factorization.

12870826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6435415.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 12870826 is about 3587.5933437334. The cubic root of 12870826 is about 234.3520767151.

The spelling of 12870826 in words is "twelve million, eight hundred seventy thousand, eight hundred twenty-six".