30120272 has 80 divisors (see below), whose sum is σ = 72828672. Its totient is φ = 11750400.

The previous prime is 30120239. The next prime is 30120289. The reversal of 30120272 is 27202103.

It is a self number, because there is not a number n which added to its sum of digits gives 30120272.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 199397 + ... + 199547.

Almost surely, 2^30120272 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 30120272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36414336).

30120272 is an abundant number, since it is smaller than the sum of its proper divisors (42708400).

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

30120272 is a wasteful number, since it uses less digits than its factorization.

30120272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316 (or 310 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 30120272 is about 5488.1938741265. The cubic root of 30120272 is about 311.1379336663.

Adding to 30120272 its reverse (27202103), we get a palindrome (57322375).

The spelling of 30120272 in words is "thirty million, one hundred twenty thousand, two hundred seventy-two".