12911516 has 6 divisors (see below), whose sum is σ = 22595160. Its totient is φ = 6455756.

The previous prime is 12911473. The next prime is 12911519. The reversal of 12911516 is 61511921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12911519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1613936 + ... + 1613943.

It is an arithmetic number, because the mean of its divisors is an integer number (3765860).

Almost surely, 2^12911516 is an apocalyptic number.

It is an amenable number.

12911516 is a deficient number, since it is larger than the sum of its proper divisors (9683644).

12911516 is a wasteful number, since it uses less digits than its factorization.

12911516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3227883 (or 3227881 counting only the distinct ones).

The product of its digits is 540, while the sum is 26.

The square root of 12911516 is about 3593.2598013503. The cubic root of 12911516 is about 234.5987781767.

The spelling of 12911516 in words is "twelve million, nine hundred eleven thousand, five hundred sixteen".