12605838 has 48 divisors (see below), whose sum is σ = 29918160. Its totient is φ = 3529344.

The previous prime is 12605821. The next prime is 12605839. The reversal of 12605838 is 83850621.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12605799 and 12605808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12605839) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15178 + ... + 15986.

It is an arithmetic number, because the mean of its divisors is an integer number (623295).

Almost surely, 2^12605838 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12605838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14959080).

12605838 is an abundant number, since it is smaller than the sum of its proper divisors (17312322).

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

12605838 is a wasteful number, since it uses less digits than its factorization.

12605838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881 (or 874 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 12605838 is about 3550.4701097179. The cubic root of 12605838 is about 232.7326103050.

The spelling of 12605838 in words is "twelve million, six hundred five thousand, eight hundred thirty-eight".