12193638 has 8 divisors (see below), whose sum is σ = 24387288. Its totient is φ = 4064544.

The previous prime is 12193619. The next prime is 12193661. The reversal of 12193638 is 83639121.

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

12193638 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 12193599 and 12193608.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1016131 + ... + 1016142.

It is an arithmetic number, because the mean of its divisors is an integer number (3048411).

Almost surely, 2^12193638 is an apocalyptic number.

12193638 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.

12193638 is a wasteful number, since it uses less digits than its factorization.

12193638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2032278.

The product of its digits is 7776, while the sum is 33.

The square root of 12193638 is about 3491.9390029037. The cubic root of 12193638 is about 230.1677289446.

The spelling of 12193638 in words is "twelve million, one hundred ninety-three thousand, six hundred thirty-eight".