30450172 has 12 divisors (see below), whose sum is σ = 54421920. Its totient is φ = 14901056.

The previous prime is 30450169. The next prime is 30450191. The reversal of 30450172 is 27105403.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 80797 + ... + 81172.

It is an arithmetic number, because the mean of its divisors is an integer number (4535160).

Almost surely, 2^30450172 is an apocalyptic number.

It is an amenable number.

30450172 is a deficient number, since it is larger than the sum of its proper divisors (23971748).

30450172 is a wasteful number, since it uses less digits than its factorization.

30450172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162020 (or 162018 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 30450172 is about 5518.1674494346. The cubic root of 30450172 is about 312.2697508213.

Adding to 30450172 its reverse (27105403), we get a palindrome (57555575).

The spelling of 30450172 in words is "thirty million, four hundred fifty thousand, one hundred seventy-two".