12639132 has 48 divisors (see below), whose sum is σ = 35750400. Its totient is φ = 3829680.

The previous prime is 12639127. The next prime is 12639149. The reversal of 12639132 is 23193621.

12639132 is a `hidden beast` number, since 12 + 639 + 13 + 2 = 666.

12639132 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 12639096 and 12639105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4132 + ... + 6507.

It is an arithmetic number, because the mean of its divisors is an integer number (744800).

Almost surely, 2^12639132 is an apocalyptic number.

12639132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12639132 is an abundant number, since it is smaller than the sum of its proper divisors (23111268).

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

12639132 is a wasteful number, since it uses less digits than its factorization.

12639132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10663 (or 10655 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 12639132 is about 3555.1556927932. The cubic root of 12639132 is about 232.9373246541.

The spelling of 12639132 in words is "twelve million, six hundred thirty-nine thousand, one hundred thirty-two".