12871716 has 72 divisors (see below), whose sum is σ = 35540064. Its totient is φ = 3594240.

The previous prime is 12871709. The next prime is 12871741. The reversal of 12871716 is 61717821.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22020 + ... + 22596.

It is an arithmetic number, because the mean of its divisors is an integer number (493612).

Almost surely, 2^12871716 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12871716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17770032).

12871716 is an abundant number, since it is smaller than the sum of its proper divisors (22668348).

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

12871716 is a wasteful number, since it uses less digits than its factorization.

12871716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621 (or 606 counting only the distinct ones).

The product of its digits is 4704, while the sum is 33.

The square root of 12871716 is about 3587.7173801736. The cubic root of 12871716 is about 234.3574782990.

It can be divided in two parts, 1287 and 1716, that added together give a palindrome (3003).

The spelling of 12871716 in words is "twelve million, eight hundred seventy-one thousand, seven hundred sixteen".