12578706 has 64 divisors (see below), whose sum is σ = 32348160. Its totient is φ = 3548880.

The previous prime is 12578701. The next prime is 12578707. The reversal of 12578706 is 60787521.

12578706 is a `hidden beast` number, since 12 + 578 + 70 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (12578701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40291 + ... + 40601.

It is an arithmetic number, because the mean of its divisors is an integer number (505440).

Almost surely, 2^12578706 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12578706, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16174080).

12578706 is an abundant number, since it is smaller than the sum of its proper divisors (19769454).

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

12578706 is a wasteful number, since it uses less digits than its factorization.

12578706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436 (or 430 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 12578706 is about 3546.6471490691. The cubic root of 12578706 is about 232.5655174359.

The spelling of 12578706 in words is "twelve million, five hundred seventy-eight thousand, seven hundred six".