12797856 has 72 divisors (see below), whose sum is σ = 37408644. Its totient is φ = 4147200.

The previous prime is 12797833. The next prime is 12797879. The reversal of 12797856 is 65879721.

It is an interprime number because it is at equal distance from previous prime (12797833) and next prime (12797879).

It can be written as a sum of positive squares in 2 ways, for example, as 12531600 + 266256 = 3540^2 + 516^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10056 + ... + 11256.

Almost surely, 2^12797856 is an apocalyptic number.

12797856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12797856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18704322).

12797856 is an abundant number, since it is smaller than the sum of its proper divisors (24610788).

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

12797856 is a wasteful number, since it uses less digits than its factorization.

12797856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1254 (or 1243 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 12797856 is about 3577.4091183425. The cubic root of 12797856 is about 233.9083577152.

The spelling of 12797856 in words is "twelve million, seven hundred ninety-seven thousand, eight hundred fifty-six".