12638254 has 4 divisors (see below), whose sum is σ = 18957384. Its totient is φ = 6319126.

The previous prime is 12638251. The next prime is 12638261. The reversal of 12638254 is 45283621.

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

It is a super-4 number, since 4×12638254⁴ (a number of 30 digits) contains 4444 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12638251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3159562 + ... + 3159565.

It is an arithmetic number, because the mean of its divisors is an integer number (4739346).

Almost surely, 2^12638254 is an apocalyptic number.

12638254 is a deficient number, since it is larger than the sum of its proper divisors (6319130).

12638254 is an equidigital number, since it uses as much as digits as its factorization.

12638254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6319129.

The product of its digits is 11520, while the sum is 31.

The square root of 12638254 is about 3555.0322080116. The cubic root of 12638254 is about 232.9319307260.

The spelling of 12638254 in words is "twelve million, six hundred thirty-eight thousand, two hundred fifty-four".