30027138 has 16 divisors (see below), whose sum is σ = 60130080. Its totient is φ = 9996416.

The previous prime is 30027131. The next prime is 30027139. The reversal of 30027138 is 83172003.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30027131) 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 7 ways as a sum of consecutive naturals, for example, 2881 + ... + 8267.

It is an arithmetic number, because the mean of its divisors is an integer number (3758130).

Almost surely, 2^30027138 is an apocalyptic number.

30027138 is an abundant number, since it is smaller than the sum of its proper divisors (30102942).

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

30027138 is a wasteful number, since it uses less digits than its factorization.

30027138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6321.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 30027138 is about 5479.7023641800. The cubic root of 30027138 is about 310.8169157754.

The spelling of 30027138 in words is "thirty million, twenty-seven thousand, one hundred thirty-eight".