12887872 has 28 divisors (see below), whose sum is σ = 25692100. Its totient is φ = 6414336.

The previous prime is 12887869. The next prime is 12887873. The reversal of 12887872 is 27878821.

It can be written as a sum of positive squares in 2 ways, for example, as 11669056 + 1218816 = 3416^2 + 1104^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12887873) 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, 22048 + ... + 22624.

It is an arithmetic number, because the mean of its divisors is an integer number (917575).

Almost surely, 2^12887872 is an apocalyptic number.

It is an amenable number.

12887872 is a deficient number, since it is larger than the sum of its proper divisors (12804228).

12887872 is an equidigital number, since it uses as much as digits as its factorization.

12887872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938 (or 928 counting only the distinct ones).

The product of its digits is 100352, while the sum is 43.

The square root of 12887872 is about 3589.9682449849. The cubic root of 12887872 is about 234.4554889657.

The spelling of 12887872 in words is "twelve million, eight hundred eighty-seven thousand, eight hundred seventy-two".