30472272 has 60 divisors (see below), whose sum is σ = 88232820. Its totient is φ = 9805824.

The previous prime is 30472271. The next prime is 30472289. The reversal of 30472272 is 27227403.

It can be written as a sum of positive squares in 2 ways, for example, as 13133376 + 17338896 = 3624^2 + 4164^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30472271) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 528 + ... + 7824.

It is an arithmetic number, because the mean of its divisors is an integer number (1470547).

Almost surely, 2^30472272 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 30472272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44116410).

30472272 is an abundant number, since it is smaller than the sum of its proper divisors (57760548).

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

30472272 is a wasteful number, since it uses less digits than its factorization.

30472272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7340 (or 7331 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 30472272 is about 5520.1695626131. The cubic root of 30472272 is about 312.3452785020.

Adding to 30472272 its reverse (27227403), we get a palindrome (57699675).

The spelling of 30472272 in words is "thirty million, four hundred seventy-two thousand, two hundred seventy-two".