30839172 has 96 divisors (see below), whose sum is σ = 91521024. Its totient is φ = 7862400.

The previous prime is 30839161. The next prime is 30839189. The reversal of 30839172 is 27193803.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33397 + ... + 34307.

It is an arithmetic number, because the mean of its divisors is an integer number (953344).

Almost surely, 2^30839172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30839172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45760512).

30839172 is an abundant number, since it is smaller than the sum of its proper divisors (60681852).

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

30839172 is a wasteful number, since it uses less digits than its factorization.

30839172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969 (or 967 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 30839172 is about 5553.3028010365. The cubic root of 30839172 is about 313.5938736352.

The spelling of 30839172 in words is "thirty million, eight hundred thirty-nine thousand, one hundred seventy-two".