30342172 has 18 divisors (see below), whose sum is σ = 61768392. Its totient is φ = 13003704.

The previous prime is 30342167. The next prime is 30342181. The reversal of 30342172 is 27124303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 77208 + ... + 77599.

Almost surely, 2^30342172 is an apocalyptic number.

It is an amenable number.

30342172 is an abundant number, since it is smaller than the sum of its proper divisors (31426220).

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

30342172 is a wasteful number, since it uses less digits than its factorization.

30342172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154825 (or 154816 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 30342172 is about 5508.3728995049. The cubic root of 30342172 is about 311.9001296613.

Adding to 30342172 its reverse (27124303), we get a palindrome (57466475).

The spelling of 30342172 in words is "thirty million, three hundred forty-two thousand, one hundred seventy-two".