12750556 has 48 divisors (see below), whose sum is σ = 28675584. Its totient is φ = 4821696.

The previous prime is 12750523. The next prime is 12750559. The reversal of 12750556 is 65505721.

12750556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12750559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7611 + ... + 9133.

It is an arithmetic number, because the mean of its divisors is an integer number (597408).

Almost surely, 2^12750556 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 12750556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14337792).

12750556 is an abundant number, since it is smaller than the sum of its proper divisors (15925028).

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

12750556 is a wasteful number, since it uses less digits than its factorization.

12750556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1570 (or 1568 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 31.

The square root of 12750556 is about 3570.7920689953. The cubic root of 12750556 is about 233.6198322047.

The spelling of 12750556 in words is "twelve million, seven hundred fifty thousand, five hundred fifty-six".