12781088 has 12 divisors (see below), whose sum is σ = 25162830. Its totient is φ = 6390528.

The previous prime is 12781081. The next prime is 12781103. The reversal of 12781088 is 88018721.

It can be written as a sum of positive squares in only one way, i.e., 12759184 + 21904 = 3572^2 + 148^2 .

It is not an unprimeable number, because it can be changed into a prime (12781081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199673 + ... + 199736.

Almost surely, 2^12781088 is an apocalyptic number.

It is an amenable number.

12781088 is a deficient number, since it is larger than the sum of its proper divisors (12381742).

12781088 is an equidigital number, since it uses as much as digits as its factorization.

12781088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399419 (or 399411 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 35.

The square root of 12781088 is about 3575.0647546583. The cubic root of 12781088 is about 233.8061559724.

The spelling of 12781088 in words is "twelve million, seven hundred eighty-one thousand, eighty-eight".