30506475 has 24 divisors (see below), whose sum is σ = 50822640. Its totient is φ = 16145920.

The previous prime is 30506467. The next prime is 30506477. The reversal of 30506475 is 57460503.

It is not a de Polignac number, because 30506475 - 2³ = 30506467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30506477) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 8791 + ... + 11759.

It is an arithmetic number, because the mean of its divisors is an integer number (2117610).

Almost surely, 2^30506475 is an apocalyptic number.

30506475 is a deficient number, since it is larger than the sum of its proper divisors (20316165).

30506475 is a wasteful number, since it uses less digits than its factorization.

30506475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3119 (or 3114 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 30.

The square root of 30506475 is about 5523.2666964397. The cubic root of 30506475 is about 312.4620967362.

Adding to 30506475 its reverse (57460503), we get a palindrome (87966978).

The spelling of 30506475 in words is "thirty million, five hundred six thousand, four hundred seventy-five".