12998871 has 12 divisors (see below), whose sum is σ = 19057272. Its totient is φ = 8536176.

The previous prime is 12998861. The next prime is 12998903. The reversal of 12998871 is 17889921.

It is not a de Polignac number, because 12998871 - 2¹⁰ = 12997847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12998861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10176 + ... + 11381.

It is an arithmetic number, because the mean of its divisors is an integer number (1588106).

Almost surely, 2^12998871 is an apocalyptic number.

12998871 is a deficient number, since it is larger than the sum of its proper divisors (6058401).

12998871 is a wasteful number, since it uses less digits than its factorization.

12998871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21630 (or 21627 counting only the distinct ones).

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

The square root of 12998871 is about 3605.3947079342. The cubic root of 12998871 is about 235.1266617625.

The spelling of 12998871 in words is "twelve million, nine hundred ninety-eight thousand, eight hundred seventy-one".