12830778 has 16 divisors (see below), whose sum is σ = 28512960. Its totient is φ = 4276908.

The previous prime is 12830771. The next prime is 12830791. The reversal of 12830778 is 87703821.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (12830771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118750 + ... + 118857.

It is an arithmetic number, because the mean of its divisors is an integer number (1782060).

Almost surely, 2^12830778 is an apocalyptic number.

12830778 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12830778 is an abundant number, since it is smaller than the sum of its proper divisors (15682182).

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

12830778 is a wasteful number, since it uses less digits than its factorization.

12830778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237618 (or 237612 counting only the distinct ones).

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

The square root of 12830778 is about 3582.0075376805. The cubic root of 12830778 is about 234.1087594360.

The spelling of 12830778 in words is "twelve million, eight hundred thirty thousand, seven hundred seventy-eight".