30986380 has 12 divisors (see below), whose sum is σ = 65071440. Its totient is φ = 12394544.

The previous prime is 30986377. The next prime is 30986381. The reversal of 30986380 is 8368903.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (30986381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 774640 + ... + 774679.

It is an arithmetic number, because the mean of its divisors is an integer number (5422620).

Almost surely, 2^30986380 is an apocalyptic number.

It is an amenable number.

30986380 is an abundant number, since it is smaller than the sum of its proper divisors (34085060).

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

30986380 is a wasteful number, since it uses less digits than its factorization.

30986380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1549328 (or 1549326 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 30986380 is about 5566.5411163486. The cubic root of 30986380 is about 314.0920524735.

The spelling of 30986380 in words is "thirty million, nine hundred eighty-six thousand, three hundred eighty".