30512272 has 60 divisors (see below), whose sum is σ = 69787200. Its totient is φ = 12659328.

The previous prime is 30512267. The next prime is 30512291. The reversal of 30512272 is 27221503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 153229 + ... + 153427.

It is an arithmetic number, because the mean of its divisors is an integer number (1163120).

Almost surely, 2^30512272 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 30512272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34893600).

30512272 is an abundant number, since it is smaller than the sum of its proper divisors (39274928).

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

30512272 is a wasteful number, since it uses less digits than its factorization.

30512272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288 (or 245 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 30512272 is about 5523.7914515304. The cubic root of 30512272 is about 312.4818873769.

Adding to 30512272 its reverse (27221503), we get a palindrome (57733775).

The spelling of 30512272 in words is "thirty million, five hundred twelve thousand, two hundred seventy-two".