12605940 has 72 divisors (see below), whose sum is σ = 38918880. Its totient is φ = 3301824.

The previous prime is 12605921. The next prime is 12605947. The reversal of 12605940 is 4950621.

12605940 is a `hidden beast` number, since 12 + 60 + 594 + 0 = 666.

12605940 is a modest number, since divided by 5940 gives 1260 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12605947) 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 23 ways as a sum of consecutive naturals, for example, 10027 + ... + 11213.

It is an arithmetic number, because the mean of its divisors is an integer number (540540).

Almost surely, 2^12605940 is an apocalyptic number.

12605940 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 12605940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19459440).

12605940 is an abundant number, since it is smaller than the sum of its proper divisors (26312940).

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

12605940 is a wasteful number, since it uses less digits than its factorization.

12605940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1261 (or 1256 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 12605940 is about 3550.4844739838. The cubic root of 12605940 is about 232.7332380211.

The spelling of 12605940 in words is "twelve million, six hundred five thousand, nine hundred forty".