12771516 has 48 divisors (see below), whose sum is σ = 31135104. Its totient is φ = 4070976.

The previous prime is 12771511. The next prime is 12771523. The reversal of 12771516 is 61517721.

It is a super-2 number, since 2×12771516² = 326223241876512, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12771511) 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 15 ways as a sum of consecutive naturals, for example, 27115 + ... + 27581.

It is an arithmetic number, because the mean of its divisors is an integer number (648648).

Almost surely, 2^12771516 is an apocalyptic number.

It is an amenable number.

12771516 is an abundant number, since it is smaller than the sum of its proper divisors (18363588).

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

12771516 is a wasteful number, since it uses less digits than its factorization.

12771516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570 (or 568 counting only the distinct ones).

The product of its digits is 2940, while the sum is 30.

The square root of 12771516 is about 3573.7257869064. The cubic root of 12771516 is about 233.7477741026.

The spelling of 12771516 in words is "twelve million, seven hundred seventy-one thousand, five hundred sixteen".