12685632 has 28 divisors (see below), whose sum is σ = 33564576. Its totient is φ = 4228480.

The previous prime is 12685619. The next prime is 12685633. The reversal of 12685632 is 23658621.

It is a junction number, because it is equal to n+sod(n) for n = 12685593 and 12685602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12685633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32844 + ... + 33227.

Almost surely, 2^12685632 is an apocalyptic number.

12685632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12685632 is an abundant number, since it is smaller than the sum of its proper divisors (20878944).

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

12685632 is an equidigital number, since it uses as much as digits as its factorization.

12685632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66086 (or 66076 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 12685632 is about 3561.6894867464. The cubic root of 12685632 is about 233.2226377427. Note that the first 3 decimals are identical.

It can be divided in two parts, 126 and 85632, that added together give a palindrome (85758).

The spelling of 12685632 in words is "twelve million, six hundred eighty-five thousand, six hundred thirty-two".