730280 has 16 divisors (see below), whose sum is σ = 1643220. Its totient is φ = 292096.

The previous prime is 730277. The next prime is 730283. The reversal of 730280 is 82037.

It is an interprime number because it is at equal distance from previous prime (730277) and next prime (730283).

It can be written as a sum of positive squares in 2 ways, for example, as 708964 + 21316 = 842^2 + 146^2 .

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

It is not an unprimeable number, because it can be changed into a prime (730283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9089 + ... + 9168.

2⁷³⁰²⁸⁰ is an apocalyptic number.

It is an amenable number.

730280 is an abundant number, since it is smaller than the sum of its proper divisors (912940).

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

730280 is a wasteful number, since it uses less digits than its factorization.

730280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18268 (or 18264 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 730280 is about 854.5642164285. The cubic root of 730280 is about 90.0526440978.

The spelling of 730280 in words is "seven hundred thirty thousand, two hundred eighty".