12812146 has 8 divisors (see below), whose sum is σ = 19239084. Its totient is φ = 6399120.

The previous prime is 12812143. The next prime is 12812147. The reversal of 12812146 is 64121821.

It can be written as a sum of positive squares in 2 ways, for example, as 11634921 + 1177225 = 3411^2 + 1085^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 12812146.

It is not an unprimeable number, because it can be changed into a prime (12812143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 745 + ... + 5116.

Almost surely, 2^12812146 is an apocalyptic number.

12812146 is a deficient number, since it is larger than the sum of its proper divisors (6426938).

12812146 is a wasteful number, since it uses less digits than its factorization.

12812146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6956.

The product of its digits is 768, while the sum is 25.

The square root of 12812146 is about 3579.4058166126. The cubic root of 12812146 is about 233.9953854984.

Adding to 12812146 its reverse (64121821), we get a palindrome (76933967).

The spelling of 12812146 in words is "twelve million, eight hundred twelve thousand, one hundred forty-six".