12810028 has 72 divisors (see below), whose sum is σ = 29792000. Its totient is φ = 4704480.

The previous prime is 12810023. The next prime is 12810041. The reversal of 12810028 is 82001821.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 12809990 and 12810008.

It is not an unprimeable number, because it can be changed into a prime (12810023) 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 23 ways as a sum of consecutive naturals, for example, 64273 + ... + 64471.

Almost surely, 2^12810028 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 12810028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14896000).

12810028 is an abundant number, since it is smaller than the sum of its proper divisors (16981972).

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

12810028 is a wasteful number, since it uses less digits than its factorization.

12810028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251 (or 238 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 22.

The square root of 12810028 is about 3579.1099452238. The cubic root of 12810028 is about 233.9824907151.

Adding to 12810028 its reverse (82001821), we get a palindrome (94811849).

The spelling of 12810028 in words is "twelve million, eight hundred ten thousand, twenty-eight".