12836538 has 48 divisors (see below), whose sum is σ = 32681376. Its totient is φ = 3589920.

The previous prime is 12836503. The next prime is 12836543. The reversal of 12836538 is 83563821.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81 + ... + 5067.

It is an arithmetic number, because the mean of its divisors is an integer number (680862).

Almost surely, 2^12836538 is an apocalyptic number.

12836538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12836538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16340688).

12836538 is an abundant number, since it is smaller than the sum of its proper divisors (19844838).

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

12836538 is a wasteful number, since it uses less digits than its factorization.

12836538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5019 (or 5016 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 12836538 is about 3582.8114658743. The cubic root of 12836538 is about 234.1437862732.

The spelling of 12836538 in words is "twelve million, eight hundred thirty-six thousand, five hundred thirty-eight".