320730 has 16 divisors (see below), whose sum is σ = 769824. Its totient is φ = 85520.

The previous prime is 320713. The next prime is 320741. The reversal of 320730 is 37023.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 320730.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5316 + ... + 5375.

It is an arithmetic number, because the mean of its divisors is an integer number (48114).

2³²⁰⁷³⁰ is an apocalyptic number.

320730 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

320730 is an abundant number, since it is smaller than the sum of its proper divisors (449094).

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

320730 is a wasteful number, since it uses less digits than its factorization.

320730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10701.

The product of its (nonzero) digits is 126, while the sum is 15.

The square root of 320730 is about 566.3302923207. The cubic root of 320730 is about 68.4510101349.

Adding to 320730 its reverse (37023), we get a palindrome (357753).

The spelling of 320730 in words is "three hundred twenty thousand, seven hundred thirty".