12851822 has 4 divisors (see below), whose sum is σ = 19277736. Its totient is φ = 6425910.

The previous prime is 12851791. The next prime is 12851831. The reversal of 12851822 is 22815821.

It is a happy number.

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

It is a congruent 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 as a sum of consecutive naturals, namely, 3212954 + ... + 3212957.

It is an arithmetic number, because the mean of its divisors is an integer number (4819434).

Almost surely, 2^12851822 is an apocalyptic number.

12851822 is a deficient number, since it is larger than the sum of its proper divisors (6425914).

12851822 is an equidigital number, since it uses as much as digits as its factorization.

12851822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6425913.

The product of its digits is 2560, while the sum is 29.

The square root of 12851822 is about 3584.9437931438. The cubic root of 12851822 is about 234.2366782520.

The spelling of 12851822 in words is "twelve million, eight hundred fifty-one thousand, eight hundred twenty-two".