12798840 has 32 divisors (see below), whose sum is σ = 38396880. Its totient is φ = 3412992.

The previous prime is 12798839. The next prime is 12798853. The reversal of 12798840 is 4889721.

12798840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53209 + ... + 53448.

Almost surely, 2^12798840 is an apocalyptic number.

12798840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12798840 is an abundant number, since it is smaller than the sum of its proper divisors (25598040).

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

12798840 is a wasteful number, since it uses less digits than its factorization.

12798840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106671 (or 106667 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 12798840 is about 3577.5466453982. The cubic root of 12798840 is about 233.9143524674.

The spelling of 12798840 in words is "twelve million, seven hundred ninety-eight thousand, eight hundred forty".