12980816 has 20 divisors (see below), whose sum is σ = 25962624. Its totient is φ = 6280800.

The previous prime is 12980783. The next prime is 12980837. The reversal of 12980816 is 61808921.

12980816 is an admirable number.

It is a congruent number.

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, 12590 + ... + 13581.

Almost surely, 2^12980816 is an apocalyptic number.

12980816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12980816 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12980816 is a wasteful number, since it uses less digits than its factorization.

12980816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26210 (or 26204 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 12980816 is about 3602.8899511364. The cubic root of 12980816 is about 235.0177502814.

The spelling of 12980816 in words is "twelve million, nine hundred eighty thousand, eight hundred sixteen".