12998840 has 32 divisors (see below), whose sum is σ = 30041280. Its totient is φ = 5058432.

The previous prime is 12998819. The next prime is 12998849. The reversal of 12998840 is 4889921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12998849) 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, 2912 + ... + 5871.

It is an arithmetic number, because the mean of its divisors is an integer number (938790).

Almost surely, 2^12998840 is an apocalyptic number.

12998840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12998840 is an abundant number, since it is smaller than the sum of its proper divisors (17042440).

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

12998840 is a wasteful number, since it uses less digits than its factorization.

12998840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8831 (or 8827 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 41.

The square root of 12998840 is about 3605.3904088184. The cubic root of 12998840 is about 235.1264748506.

The spelling of 12998840 in words is "twelve million, nine hundred ninety-eight thousand, eight hundred forty".