320534730 has 96 divisors (see below), whose sum is σ = 867829248. Its totient is φ = 81993600.

The previous prime is 320534729. The next prime is 320534743. The reversal of 320534730 is 37435023.

320534730 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 320534694 and 320534703.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 365052 + ... + 365928.

It is an arithmetic number, because the mean of its divisors is an integer number (9039888).

Almost surely, 2^320534730 is an apocalyptic number.

320534730 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 320534730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (433914624).

320534730 is an abundant number, since it is smaller than the sum of its proper divisors (547294518).

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

320534730 is a wasteful number, since it uses less digits than its factorization.

320534730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1052 (or 1049 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 27.

The square root of 320534730 is about 17903.4837392056. The cubic root of 320534730 is about 684.3711564180.

Adding to 320534730 its reverse (37435023), we get a palindrome (357969753).

The spelling of 320534730 in words is "three hundred twenty million, five hundred thirty-four thousand, seven hundred thirty".