12535638 has 8 divisors (see below), whose sum is σ = 25071288. Its totient is φ = 4178544.

The previous prime is 12535609. The next prime is 12535643. The reversal of 12535638 is 83653521.

It is a sphenic number, since it is the product of 3 distinct primes.

12535638 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 12535599 and 12535608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1044631 + ... + 1044642.

It is an arithmetic number, because the mean of its divisors is an integer number (3133911).

Almost surely, 2^12535638 is an apocalyptic number.

12535638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12535638 is a wasteful number, since it uses less digits than its factorization.

12535638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2089278.

The product of its digits is 21600, while the sum is 33.

The square root of 12535638 is about 3540.5702930460. The cubic root of 12535638 is about 232.2997883312.

The spelling of 12535638 in words is "twelve million, five hundred thirty-five thousand, six hundred thirty-eight".