12765822 has 16 divisors (see below), whose sum is σ = 25627152. Its totient is φ = 4239360.

The previous prime is 12765821. The next prime is 12765839. The reversal of 12765822 is 22856721.

It is a super-2 number, since 2×12765822² = 325932422671368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12765821) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 2179 + ... + 5502.

It is an arithmetic number, because the mean of its divisors is an integer number (1601697).

Almost surely, 2^12765822 is an apocalyptic number.

12765822 is an abundant number, since it is smaller than the sum of its proper divisors (12861330).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12765822 is a wasteful number, since it uses less digits than its factorization.

12765822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7963.

The product of its digits is 13440, while the sum is 33.

The square root of 12765822 is about 3572.9290505130. The cubic root of 12765822 is about 233.7130312244.

The spelling of 12765822 in words is "twelve million, seven hundred sixty-five thousand, eight hundred twenty-two".