12838021 has 8 divisors (see below), whose sum is σ = 14696640. Its totient is φ = 10985568.

The previous prime is 12838013. The next prime is 12838051. The reversal of 12838021 is 12083821.

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

It is a cyclic number.

It is not a de Polignac number, because 12838021 - 2³ = 12838013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12838051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4530 + ... + 6796.

It is an arithmetic number, because the mean of its divisors is an integer number (1837080).

Almost surely, 2^12838021 is an apocalyptic number.

It is an amenable number.

12838021 is a deficient number, since it is larger than the sum of its proper divisors (1858619).

12838021 is an equidigital number, since it uses as much as digits as its factorization.

12838021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3083.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 12838021 is about 3583.0184202708. The cubic root of 12838021 is about 234.1528027714.

The spelling of 12838021 in words is "twelve million, eight hundred thirty-eight thousand, twenty-one".