12609012 has 48 divisors (see below), whose sum is σ = 31977792. Its totient is φ = 3843840.

The previous prime is 12608993. The next prime is 12609013. The reversal of 12609012 is 21090621.

It is a super-2 number, since 2×12609012² = 317974367232288, 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 12609012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12609013) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 20128 + ... + 20744.

It is an arithmetic number, because the mean of its divisors is an integer number (666204).

Almost surely, 2^12609012 is an apocalyptic number.

12609012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12609012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15988896).

12609012 is an abundant number, since it is smaller than the sum of its proper divisors (19368780).

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

12609012 is a wasteful number, since it uses less digits than its factorization.

12609012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768 (or 766 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 12609012 is about 3550.9170646468. The cubic root of 12609012 is about 232.7521417664.

Adding to 12609012 its reverse (21090621), we get a palindrome (33699633).

The spelling of 12609012 in words is "twelve million, six hundred nine thousand, twelve".