12821795 has 16 divisors (see below), whose sum is σ = 18061248. Its totient is φ = 8553600.

The previous prime is 12821761. The next prime is 12821801. The reversal of 12821795 is 59712821.

It is not a de Polignac number, because 12821795 - 2²⁰ = 11773219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3656 + ... + 6245.

It is an arithmetic number, because the mean of its divisors is an integer number (1128828).

Almost surely, 2^12821795 is an apocalyptic number.

12821795 is a deficient number, since it is larger than the sum of its proper divisors (5239453).

12821795 is an equidigital number, since it uses as much as digits as its factorization.

12821795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9950.

The product of its digits is 10080, while the sum is 35.

The square root of 12821795 is about 3580.7534123422. The cubic root of 12821795 is about 234.0541124521.

The spelling of 12821795 in words is "twelve million, eight hundred twenty-one thousand, seven hundred ninety-five".