12635982 has 24 divisors (see below), whose sum is σ = 27565200. Its totient is φ = 4183200.

The previous prime is 12635977. The next prime is 12635989. The reversal of 12635982 is 28953621.

12635982 is a `hidden beast` number, since 1 + 2 + 63 + 598 + 2 = 666.

12635982 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12635982² = 319336082208648, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12635989) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 394 + ... + 5042.

It is an arithmetic number, because the mean of its divisors is an integer number (1148550).

Almost surely, 2^12635982 is an apocalyptic number.

12635982 is an abundant number, since it is smaller than the sum of its proper divisors (14929218).

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

12635982 is a wasteful number, since it uses less digits than its factorization.

12635982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4808 (or 4805 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 12635982 is about 3554.7126466144. The cubic root of 12635982 is about 232.9179717023.

The spelling of 12635982 in words is "twelve million, six hundred thirty-five thousand, nine hundred eighty-two".