30320352 has 96 divisors (see below), whose sum is σ = 93139200. Its totient is φ = 9569664.

The previous prime is 30320317. The next prime is 30320359. The reversal of 30320352 is 25302303.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30320359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15493 + ... + 17339.

It is an arithmetic number, because the mean of its divisors is an integer number (970200).

Almost surely, 2^30320352 is an apocalyptic number.

30320352 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30320352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46569600).

30320352 is an abundant number, since it is smaller than the sum of its proper divisors (62818848).

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

30320352 is a wasteful number, since it uses less digits than its factorization.

30320352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1885 (or 1871 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 18.

The square root of 30320352 is about 5506.3919221211. The cubic root of 30320352 is about 311.8253460360.

Adding to 30320352 its reverse (25302303), we get a palindrome (55622655).

The spelling of 30320352 in words is "thirty million, three hundred twenty thousand, three hundred fifty-two".