12730878 has 32 divisors (see below), whose sum is σ = 28408320. Its totient is φ = 4226040.

The previous prime is 12730877. The next prime is 12730889. The reversal of 12730878 is 87803721.

12730878 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12730877) 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, 23001 + ... + 23547.

It is an arithmetic number, because the mean of its divisors is an integer number (887760).

Almost surely, 2^12730878 is an apocalyptic number.

12730878 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12730878 is an abundant number, since it is smaller than the sum of its proper divisors (15677442).

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

12730878 is a wasteful number, since it uses less digits than its factorization.

12730878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989 (or 983 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 12730878 is about 3568.0355939929. The cubic root of 12730878 is about 233.4995880879.

The spelling of 12730878 in words is "twelve million, seven hundred thirty thousand, eight hundred seventy-eight".