12786870 has 16 divisors (see below), whose sum is σ = 30688560. Its totient is φ = 3409824.

The previous prime is 12786863. The next prime is 12786871. The reversal of 12786870 is 7868721.

12786870 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12786871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213085 + ... + 213144.

It is an arithmetic number, because the mean of its divisors is an integer number (1918035).

Almost surely, 2^12786870 is an apocalyptic number.

12786870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12786870 is an abundant number, since it is smaller than the sum of its proper divisors (17901690).

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

12786870 is a wasteful number, since it uses less digits than its factorization.

12786870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426239.

The product of its (nonzero) digits is 37632, while the sum is 39.

The square root of 12786870 is about 3575.8733199038. The cubic root of 12786870 is about 233.8414076242.

The spelling of 12786870 in words is "twelve million, seven hundred eighty-six thousand, eight hundred seventy".