12881788 has 6 divisors (see below), whose sum is σ = 22543136. Its totient is φ = 6440892.

The previous prime is 12881783. The next prime is 12881789. The reversal of 12881788 is 88718821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12881783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1610220 + ... + 1610227.

Almost surely, 2^12881788 is an apocalyptic number.

It is an amenable number.

12881788 is a deficient number, since it is larger than the sum of its proper divisors (9661348).

12881788 is a wasteful number, since it uses less digits than its factorization.

12881788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3220451 (or 3220449 counting only the distinct ones).

The product of its digits is 57344, while the sum is 43.

The square root of 12881788 is about 3589.1207837018. The cubic root of 12881788 is about 234.4185898895.

The spelling of 12881788 in words is "twelve million, eight hundred eighty-one thousand, seven hundred eighty-eight".