730120 has 16 divisors (see below), whose sum is σ = 1642860. Its totient is φ = 292032.

The previous prime is 730111. The next prime is 730139. The reversal of 730120 is 21037.

It can be written as a sum of positive squares in 2 ways, for example, as 599076 + 131044 = 774^2 + 362^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 730120.

It is an unprimeable number.

730120 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9087 + ... + 9166.

2⁷³⁰¹²⁰ is an apocalyptic number.

It is an amenable number.

730120 is an abundant number, since it is smaller than the sum of its proper divisors (912740).

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

730120 is a wasteful number, since it uses less digits than its factorization.

730120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18264 (or 18260 counting only the distinct ones).

The product of its (nonzero) digits is 42, while the sum is 13.

The square root of 730120 is about 854.4705963344. The cubic root of 730120 is about 90.0460669514.

Adding to 730120 its reverse (21037), we get a palindrome (751157).

The spelling of 730120 in words is "seven hundred thirty thousand, one hundred twenty".