12998718 has 20 divisors (see below), whose sum is σ = 29127120. Its totient is φ = 4332852.

The previous prime is 12998707. The next prime is 12998719. The reversal of 12998718 is 81789921.

12998718 is digitally balanced in base 2 and base 4, because in such bases 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 (12998719) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 39958 + ... + 40281.

It is an arithmetic number, because the mean of its divisors is an integer number (1456356).

Almost surely, 2^12998718 is an apocalyptic number.

12998718 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12998718 is an abundant number, since it is smaller than the sum of its proper divisors (16128402).

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

12998718 is an equidigital number, since it uses as much as digits as its factorization.

12998718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80253 (or 80244 counting only the distinct ones).

The product of its digits is 72576, while the sum is 45.

The square root of 12998718 is about 3605.3734896679. The cubic root of 12998718 is about 235.1257392588.

The spelling of 12998718 in words is "twelve million, nine hundred ninety-eight thousand, seven hundred eighteen".