30145875 has 32 divisors (see below), whose sum is σ = 52815360. Its totient is φ = 15228000.

The previous prime is 30145831. The next prime is 30145883. The reversal of 30145875 is 57854103.

It is not a de Polignac number, because 30145875 - 2¹² = 30141779 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5010 + ... + 9240.

It is an arithmetic number, because the mean of its divisors is an integer number (1650480).

Almost surely, 2^30145875 is an apocalyptic number.

30145875 is a deficient number, since it is larger than the sum of its proper divisors (22669485).

30145875 is a wasteful number, since it uses less digits than its factorization.

30145875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4268 (or 4258 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 30145875 is about 5490.5259310926. The cubic root of 30145875 is about 311.2260670941.

Adding to 30145875 its reverse (57854103), we get a palindrome (87999978).

The spelling of 30145875 in words is "thirty million, one hundred forty-five thousand, eight hundred seventy-five".