12609822 has 32 divisors (see below), whose sum is σ = 26265600. Its totient is φ = 4032288.

The previous prime is 12609803. The next prime is 12609823. The reversal of 12609822 is 22890621.

It is a super-2 number, since 2×12609822² = 318015221743368, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12609822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12609823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17179 + ... + 17897.

It is an arithmetic number, because the mean of its divisors is an integer number (820800).

Almost surely, 2^12609822 is an apocalyptic number.

12609822 is an abundant number, since it is smaller than the sum of its proper divisors (13655778).

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

12609822 is a wasteful number, since it uses less digits than its factorization.

12609822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 12609822 is about 3551.0311178586. The cubic root of 12609822 is about 232.7571256408.

It can be divided in two parts, 12609 and 822, that added together give a palindrome (13431).

The spelling of 12609822 in words is "twelve million, six hundred nine thousand, eight hundred twenty-two".