30519172 has 12 divisors (see below), whose sum is σ = 53491536. Its totient is φ = 15235880.

The previous prime is 30519169. The next prime is 30519179. The reversal of 30519172 is 27191503.

It is a self number, because there is not a number n which added to its sum of digits gives 30519172.

It is not an unprimeable number, because it can be changed into a prime (30519179) 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 3 ways as a sum of consecutive naturals, for example, 2854 + ... + 8317.

It is an arithmetic number, because the mean of its divisors is an integer number (4457628).

Almost surely, 2^30519172 is an apocalyptic number.

It is an amenable number.

30519172 is a deficient number, since it is larger than the sum of its proper divisors (22972364).

30519172 is a wasteful number, since it uses less digits than its factorization.

30519172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11858 (or 11856 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 30519172 is about 5524.4159872334. The cubic root of 30519172 is about 312.5054403320.

The spelling of 30519172 in words is "thirty million, five hundred nineteen thousand, one hundred seventy-two".