12605340 has 96 divisors (see below), whose sum is σ = 39191040. Its totient is φ = 3001600.

The previous prime is 12605339. The next prime is 12605363. The reversal of 12605340 is 4350621.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 46726 + ... + 46994.

It is an arithmetic number, because the mean of its divisors is an integer number (408240).

Almost surely, 2^12605340 is an apocalyptic number.

12605340 is a gapful number since it is divisible by the number (10) 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 12605340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19595520).

12605340 is an abundant number, since it is smaller than the sum of its proper divisors (26585700).

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

12605340 is a wasteful number, since it uses less digits than its factorization.

12605340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363 (or 361 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 12605340 is about 3550.3999774673. The cubic root of 12605340 is about 232.7295455248.

Adding to 12605340 its reverse (4350621), we get a palindrome (16955961).

The spelling of 12605340 in words is "twelve million, six hundred five thousand, three hundred forty".