12821246 has 4 divisors (see below), whose sum is σ = 19231872. Its totient is φ = 6410622.

The previous prime is 12821227. The next prime is 12821261. The reversal of 12821246 is 64212821.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64212821 = 6337 ⋅10133.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3205310 + ... + 3205313.

It is an arithmetic number, because the mean of its divisors is an integer number (4807968).

Almost surely, 2^12821246 is an apocalyptic number.

12821246 is a deficient number, since it is larger than the sum of its proper divisors (6410626).

12821246 is an equidigital number, since it uses as much as digits as its factorization.

12821246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6410625.

The product of its digits is 1536, while the sum is 26.

The square root of 12821246 is about 3580.6767516770. The cubic root of 12821246 is about 234.0507718501.

The spelling of 12821246 in words is "twelve million, eight hundred twenty-one thousand, two hundred forty-six".