30733272 has 96 divisors (see below), whose sum is σ = 88452000. Its totient is φ = 9623040.

The previous prime is 30733271. The next prime is 30733309. The reversal of 30733272 is 27233703.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30733271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85429 + ... + 85787.

It is an arithmetic number, because the mean of its divisors is an integer number (921375).

Almost surely, 2^30733272 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 30733272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44226000).

30733272 is an abundant number, since it is smaller than the sum of its proper divisors (57718728).

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

30733272 is a wasteful number, since it uses less digits than its factorization.

30733272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441 (or 434 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 27.

The square root of 30733272 is about 5543.7597350535. The cubic root of 30733272 is about 313.2345073374.

Adding to 30733272 its reverse (27233703), we get a palindrome (57966975).

The spelling of 30733272 in words is "thirty million, seven hundred thirty-three thousand, two hundred seventy-two".