12838578 has 16 divisors (see below), whose sum is σ = 25771296. Its totient is φ = 4263840.

The previous prime is 12838571. The next prime is 12838591. The reversal of 12838578 is 87583821.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12838571) by changing a digit.

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, 2083 + ... + 5478.

It is an arithmetic number, because the mean of its divisors is an integer number (1610706).

Almost surely, 2^12838578 is an apocalyptic number.

12838578 is an abundant number, since it is smaller than the sum of its proper divisors (12932718).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12838578 is a wasteful number, since it uses less digits than its factorization.

12838578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7849.

The product of its digits is 107520, while the sum is 42.

The square root of 12838578 is about 3583.0961471889. The cubic root of 12838578 is about 234.1561890988.

The spelling of 12838578 in words is "twelve million, eight hundred thirty-eight thousand, five hundred seventy-eight".