12884881 has 4 divisors (see below), whose sum is σ = 12892672. Its totient is φ = 12877092.

The previous prime is 12884857. The next prime is 12884887. The reversal of 12884881 is 18848821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 18848821 = 1459 ⋅12919.

It is a cyclic number.

It is not a de Polignac number, because 12884881 - 2⁵ = 12884849 is a prime.

It is a super-2 number, since 2×12884881² = 332040316768322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12884887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321 + ... + 5086.

It is an arithmetic number, because the mean of its divisors is an integer number (3223168).

Almost surely, 2^12884881 is an apocalyptic number.

It is an amenable number.

12884881 is a deficient number, since it is larger than the sum of its proper divisors (7791).

12884881 is an equidigital number, since it uses as much as digits as its factorization.

12884881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7790.

The product of its digits is 32768, while the sum is 40.

The square root of 12884881 is about 3589.5516433115. The cubic root of 12884881 is about 234.4373501909.

It can be divided in two parts, 1 and 2884881, that added together give a palindrome (2884882).

The spelling of 12884881 in words is "twelve million, eight hundred eighty-four thousand, eight hundred eighty-one".