30684084 has 12 divisors (see below), whose sum is σ = 71596224. Its totient is φ = 10228024.

The previous prime is 30684083. The next prime is 30684097. The reversal of 30684084 is 48048603.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30684083) 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, 1278492 + ... + 1278515.

It is an arithmetic number, because the mean of its divisors is an integer number (5966352).

Almost surely, 2^30684084 is an apocalyptic number.

It is an amenable number.

30684084 is an abundant number, since it is smaller than the sum of its proper divisors (40912140).

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

30684084 is a wasteful number, since it uses less digits than its factorization.

30684084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2557014 (or 2557012 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 30684084 is about 5539.3216191155. The cubic root of 30684084 is about 313.0673095417.

The spelling of 30684084 in words is "thirty million, six hundred eighty-four thousand, eighty-four".