12486638 has 4 divisors (see below), whose sum is σ = 18729960. Its totient is φ = 6243318.

The previous prime is 12486623. The next prime is 12486659. The reversal of 12486638 is 83668421.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×12486638² = 311832257086088, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3121658 + ... + 3121661.

It is an arithmetic number, because the mean of its divisors is an integer number (4682490).

Almost surely, 2^12486638 is an apocalyptic number.

12486638 is a deficient number, since it is larger than the sum of its proper divisors (6243322).

12486638 is an equidigital number, since it uses as much as digits as its factorization.

12486638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6243321.

The product of its digits is 55296, while the sum is 38.

The square root of 12486638 is about 3533.6437285046. The cubic root of 12486638 is about 231.9967176507.

The spelling of 12486638 in words is "twelve million, four hundred eighty-six thousand, six hundred thirty-eight".