30534320 has 40 divisors (see below), whose sum is σ = 71714160. Its totient is φ = 12089600.

The previous prime is 30534319. The next prime is 30534323. The reversal of 30534320 is 2343503.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 30534292 and 30534301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30534323) 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 7 ways as a sum of consecutive naturals, for example, 6191 + ... + 9969.

It is an arithmetic number, because the mean of its divisors is an integer number (1792854).

Almost surely, 2^30534320 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 30534320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35857080).

30534320 is an abundant number, since it is smaller than the sum of its proper divisors (41179840).

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

30534320 is a wasteful number, since it uses less digits than its factorization.

30534320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3893 (or 3887 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 20.

The square root of 30534320 is about 5525.7868218019. The cubic root of 30534320 is about 312.5571351532.

Adding to 30534320 its reverse (2343503), we get a palindrome (32877823).

It can be divided in two parts, 305 and 34320, that multiplied together give a triangular number (10467600 = T₄₅₇₅).

The spelling of 30534320 in words is "thirty million, five hundred thirty-four thousand, three hundred twenty".