308987132 has 12 divisors (see below), whose sum is σ = 540971256. Its totient is φ = 154423920.

The previous prime is 308987117. The next prime is 308987149. The reversal of 308987132 is 231789803.

It is a self number, because there is not a number n which added to its sum of digits gives 308987132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6698 + ... + 25745.

It is an arithmetic number, because the mean of its divisors is an integer number (45080938).

Almost surely, 2^308987132 is an apocalyptic number.

It is an amenable number.

308987132 is a deficient number, since it is larger than the sum of its proper divisors (231984124).

308987132 is a wasteful number, since it uses less digits than its factorization.

308987132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34828 (or 34826 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 308987132 is about 17578.0298099645. The cubic root of 308987132 is about 676.0520454076.

The spelling of 308987132 in words is "three hundred eight million, nine hundred eighty-seven thousand, one hundred thirty-two".