30516172 has 6 divisors (see below), whose sum is σ = 53403308. Its totient is φ = 15258084.

The previous prime is 30516169. The next prime is 30516179. The reversal of 30516172 is 27161503.

It is not an unprimeable number, because it can be changed into a prime (30516179) 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 as a sum of consecutive naturals, namely, 3814518 + ... + 3814525.

Almost surely, 2^30516172 is an apocalyptic number.

It is an amenable number.

30516172 is a deficient number, since it is larger than the sum of its proper divisors (22887136).

30516172 is a wasteful number, since it uses less digits than its factorization.

30516172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7629047 (or 7629045 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 30516172 is about 5524.1444586470. The cubic root of 30516172 is about 312.4952003529.

Adding to 30516172 its reverse (27161503), we get a palindrome (57677675).

The spelling of 30516172 in words is "thirty million, five hundred sixteen thousand, one hundred seventy-two".