308986120 has 32 divisors (see below), whose sum is σ = 696429720. Its totient is φ = 123379200.

The previous prime is 308986091. The next prime is 308986121. The reversal of 308986120 is 21689803.

It can be written as a sum of positive squares in 4 ways, for example, as 259789924 + 49196196 = 16118^2 + 7014^2 .

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 308986120.

It is not an unprimeable number, because it can be changed into a prime (308986121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17614 + ... + 30466.

Almost surely, 2^308986120 is an apocalyptic number.

It is an amenable number.

308986120 is an abundant number, since it is smaller than the sum of its proper divisors (387443600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

308986120 is a wasteful number, since it uses less digits than its factorization.

308986120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13465 (or 13461 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 308986120 is about 17578.0010240073. The cubic root of 308986120 is about 676.0513073344.

The spelling of 308986120 in words is "three hundred eight million, nine hundred eighty-six thousand, one hundred twenty".