30206984 has 16 divisors (see below), whose sum is σ = 57955920. Its totient is φ = 14752080.

The previous prime is 30206983. The next prime is 30206987. The reversal of 30206984 is 48960203.

It is a self number, because there is not a number n which added to its sum of digits gives 30206984.

It is not an unprimeable number, because it can be changed into a prime (30206983) 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, 43562 + ... + 44249.

It is an arithmetic number, because the mean of its divisors is an integer number (3622245).

Almost surely, 2^30206984 is an apocalyptic number.

It is an amenable number.

30206984 is a deficient number, since it is larger than the sum of its proper divisors (27748936).

30206984 is a wasteful number, since it uses less digits than its factorization.

30206984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87860 (or 87856 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 30206984 is about 5496.0880633411. The cubic root of 30206984 is about 311.4362216308.

The spelling of 30206984 in words is "thirty million, two hundred six thousand, nine hundred eighty-four".