12812436 has 72 divisors (see below), whose sum is σ = 39871104. Its totient is φ = 3378240.

The previous prime is 12812419. The next prime is 12812473. The reversal of 12812436 is 63421821.

It is a congruent number.

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, 1321 + ... + 5231.

Almost surely, 2^12812436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12812436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19935552).

12812436 is an abundant number, since it is smaller than the sum of its proper divisors (27058668).

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

12812436 is a wasteful number, since it uses less digits than its factorization.

12812436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3941 (or 3936 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 12812436 is about 3579.4463259001. The cubic root of 12812436 is about 233.9971509625.

The spelling of 12812436 in words is "twelve million, eight hundred twelve thousand, four hundred thirty-six".