12301638 has 8 divisors (see below), whose sum is σ = 24603288. Its totient is φ = 4100544.

The previous prime is 12301621. The next prime is 12301657. The reversal of 12301638 is 83610321.

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

12301638 is an admirable number.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between odd and even.

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, 1025131 + ... + 1025142.

It is an arithmetic number, because the mean of its divisors is an integer number (3075411).

Almost surely, 2^12301638 is an apocalyptic number.

12301638 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.

12301638 is a wasteful number, since it uses less digits than its factorization.

12301638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2050278.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 12301638 is about 3507.3690994818. The cubic root of 12301638 is about 230.8452703436.

Adding to 12301638 its reverse (83610321), we get a palindrome (95911959).

The spelling of 12301638 in words is "twelve million, three hundred one thousand, six hundred thirty-eight".