12671616 has 32 divisors (see below), whose sum is σ = 33660000. Its totient is φ = 4223744.

The previous prime is 12671609. The next prime is 12671621. The reversal of 12671616 is 61617621.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16116 + ... + 16883.

It is an arithmetic number, because the mean of its divisors is an integer number (1051875).

Almost surely, 2^12671616 is an apocalyptic number.

12671616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12671616 is an abundant number, since it is smaller than the sum of its proper divisors (20988384).

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

12671616 is an equidigital number, since it uses as much as digits as its factorization.

12671616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33016 (or 33004 counting only the distinct ones).

The product of its digits is 3024, while the sum is 30.

The square root of 12671616 is about 3559.7213374083. The cubic root of 12671616 is about 233.1367123662.

The spelling of 12671616 in words is "twelve million, six hundred seventy-one thousand, six hundred sixteen".