30138084 has 36 divisors (see below), whose sum is σ = 76530636. Its totient is φ = 10000128.

The previous prime is 30138083. The next prime is 30138131. The reversal of 30138084 is 48083103.

It can be written as a sum of positive squares in 2 ways, for example, as 7784100 + 22353984 = 2790^2 + 4728^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30138083) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6592 + ... + 10184.

It is an arithmetic number, because the mean of its divisors is an integer number (2125851).

Almost surely, 2^30138084 is an apocalyptic number.

It is an amenable number.

30138084 is an abundant number, since it is smaller than the sum of its proper divisors (46392552).

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

30138084 is a wasteful number, since it uses less digits than its factorization.

30138084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3836 (or 3831 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 30138084 is about 5489.8163903723. The cubic root of 30138084 is about 311.1992533515.

The spelling of 30138084 in words is "thirty million, one hundred thirty-eight thousand, eighty-four".