30986680 has 16 divisors (see below), whose sum is σ = 69720120. Its totient is φ = 12394656.

The previous prime is 30986671. The next prime is 30986689. The reversal of 30986680 is 8668903.

It is an interprime number because it is at equal distance from previous prime (30986671) and next prime (30986689).

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 774667 = 30986680 / (3 + 0 + 9 + 8 + 6 + 6 + 8 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30986689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 387294 + ... + 387373.

Almost surely, 2^30986680 is an apocalyptic number.

It is an amenable number.

30986680 is an abundant number, since it is smaller than the sum of its proper divisors (38733440).

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

30986680 is a wasteful number, since it uses less digits than its factorization.

30986680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774678 (or 774674 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 30986680 is about 5566.5680629990. The cubic root of 30986680 is about 314.0930661158.

The spelling of 30986680 in words is "thirty million, nine hundred eighty-six thousand, six hundred eighty".