12775872 has 28 divisors (see below), whose sum is σ = 33803336. Its totient is φ = 4258560.

The previous prime is 12775871. The next prime is 12775913. The reversal of 12775872 is 27857721.

It is a self number, because there is not a number n which added to its sum of digits gives 12775872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12775871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33079 + ... + 33462.

It is an arithmetic number, because the mean of its divisors is an integer number (1207262).

Almost surely, 2^12775872 is an apocalyptic number.

12775872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12775872 is an abundant number, since it is smaller than the sum of its proper divisors (21027464).

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

12775872 is an equidigital number, since it uses as much as digits as its factorization.

12775872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66556 (or 66546 counting only the distinct ones).

The product of its digits is 54880, while the sum is 39.

The square root of 12775872 is about 3574.3351829396. The cubic root of 12775872 is about 233.7743459824.

The spelling of 12775872 in words is "twelve million, seven hundred seventy-five thousand, eight hundred seventy-two".