12788878 has 4 divisors (see below), whose sum is σ = 19183320. Its totient is φ = 6394438.

The previous prime is 12788873. The next prime is 12788891. The reversal of 12788878 is 87888721.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12788873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3197218 + ... + 3197221.

It is an arithmetic number, because the mean of its divisors is an integer number (4795830).

Almost surely, 2^12788878 is an apocalyptic number.

12788878 is a deficient number, since it is larger than the sum of its proper divisors (6394442).

12788878 is an equidigital number, since it uses as much as digits as its factorization.

12788878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6394441.

The product of its digits is 401408, while the sum is 49.

The square root of 12788878 is about 3576.1540794546. The cubic root of 12788878 is about 233.8536474965.

The spelling of 12788878 in words is "twelve million, seven hundred eighty-eight thousand, eight hundred seventy-eight".