30030173172 has 24 divisors (see below), whose sum is σ = 77856004800. Its totient is φ = 10010057688.

The previous prime is 30030173171. The next prime is 30030173183. The reversal of 30030173172 is 27137103003.

30030173172 is a `hidden beast` number, since 300 + 30 + 17 + 317 + 2 = 666.

It is a super-2 number, since 2×30030173172² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30030173171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139028472 + ... + 139028687.

It is an arithmetic number, because the mean of its divisors is an integer number (3244000200).

Almost surely, 2^30030173172 is an apocalyptic number.

It is an amenable number.

30030173172 is an abundant number, since it is smaller than the sum of its proper divisors (47825831628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30030173172 is a wasteful number, since it uses less digits than its factorization.

30030173172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278057172 (or 278057164 counting only the distinct ones).

The product of its (nonzero) digits is 2646, while the sum is 27.

Adding to 30030173172 its reverse (27137103003), we get a palindrome (57167276175).

The spelling of 30030173172 in words is "thirty billion, thirty million, one hundred seventy-three thousand, one hundred seventy-two".