12896556 has 12 divisors (see below), whose sum is σ = 30091992. Its totient is φ = 4298848.

The previous prime is 12896519. The next prime is 12896579. The reversal of 12896556 is 65569821.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×12896556² = 332642313322272, which contains 22 as substring.

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, 537345 + ... + 537368.

It is an arithmetic number, because the mean of its divisors is an integer number (2507666).

Almost surely, 2^12896556 is an apocalyptic number.

It is an amenable number.

12896556 is an abundant number, since it is smaller than the sum of its proper divisors (17195436).

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

12896556 is a wasteful number, since it uses less digits than its factorization.

12896556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074720 (or 1074718 counting only the distinct ones).

The product of its digits is 129600, while the sum is 42.

The square root of 12896556 is about 3591.1775227633. The cubic root of 12896556 is about 234.5081367662.

The spelling of 12896556 in words is "twelve million, eight hundred ninety-six thousand, five hundred fifty-six".