12898138 has 16 divisors (see below), whose sum is σ = 22348224. Its totient is φ = 5517760.

The previous prime is 12898111. The next prime is 12898157. The reversal of 12898138 is 83189821.

It is a self number, because there is not a number n which added to its sum of digits gives 12898138.

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 7 ways as a sum of consecutive naturals, for example, 16870 + ... + 17617.

It is an arithmetic number, because the mean of its divisors is an integer number (1396764).

Almost surely, 2^12898138 is an apocalyptic number.

12898138 is a deficient number, since it is larger than the sum of its proper divisors (9450086).

12898138 is a wasteful number, since it uses less digits than its factorization.

12898138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34517.

The product of its digits is 27648, while the sum is 40.

The square root of 12898138 is about 3591.3977780246. The cubic root of 12898138 is about 234.5177252875.

It can be divided in two parts, 1289813 and 8, that added together give a palindrome (1289821).

The spelling of 12898138 in words is "twelve million, eight hundred ninety-eight thousand, one hundred thirty-eight".