12987908 has 6 divisors (see below), whose sum is σ = 22728846. Its totient is φ = 6493952.

The previous prime is 12987907. The next prime is 12987917. The reversal of 12987908 is 80978921.

It can be written as a sum of positive squares in only one way, i.e., 9535744 + 3452164 = 3088^2 + 1858^2 .

It is not an unprimeable number, because it can be changed into a prime (12987907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1623485 + ... + 1623492.

It is an arithmetic number, because the mean of its divisors is an integer number (3788141).

Almost surely, 2^12987908 is an apocalyptic number.

It is an amenable number.

12987908 is a deficient number, since it is larger than the sum of its proper divisors (9740938).

12987908 is a wasteful number, since it uses less digits than its factorization.

12987908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3246981 (or 3246979 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 44.

The square root of 12987908 is about 3603.8740266552. The cubic root of 12987908 is about 235.0605427231.

The spelling of 12987908 in words is "twelve million, nine hundred eighty-seven thousand, nine hundred eight".