30072130 has 48 divisors (see below), whose sum is σ = 61621560. Its totient is φ = 10545920.

The previous prime is 30072113. The next prime is 30072137. The reversal of 30072130 is 3127003.

It can be written as a sum of positive squares in 4 ways, for example, as 28933641 + 1138489 = 5379^2 + 1067^2 .

It is not an unprimeable number, because it can be changed into a prime (30072137) 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 23 ways as a sum of consecutive naturals, for example, 34662 + ... + 35518.

Almost surely, 2^30072130 is an apocalyptic number.

30072130 is an abundant number, since it is smaller than the sum of its proper divisors (31549430).

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

30072130 is a wasteful number, since it uses less digits than its factorization.

30072130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915 (or 904 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 16.

The square root of 30072130 is about 5483.8061599586. The cubic root of 30072130 is about 310.9720787029.

Adding to 30072130 its reverse (3127003), we get a palindrome (33199133).

The spelling of 30072130 in words is "thirty million, seventy-two thousand, one hundred thirty".