12810922 has 4 divisors (see below), whose sum is σ = 19216386. Its totient is φ = 6405460.

The previous prime is 12810913. The next prime is 12810949. The reversal of 12810922 is 22901821.

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., 12809241 + 1681 = 3579^2 + 41^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3202729 + ... + 3202732.

Almost surely, 2^12810922 is an apocalyptic number.

12810922 is a deficient number, since it is larger than the sum of its proper divisors (6405464).

12810922 is an equidigital number, since it uses as much as digits as its factorization.

12810922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6405463.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 12810922 is about 3579.2348344304. The cubic root of 12810922 is about 233.9879337290.

The spelling of 12810922 in words is "twelve million, eight hundred ten thousand, nine hundred twenty-two".