730090 has 8 divisors (see below), whose sum is σ = 1314180. Its totient is φ = 292032.

The previous prime is 730069. The next prime is 730091. The reversal of 730090 is 90037.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 687241 + 42849 = 829^2 + 207^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (730091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36495 + ... + 36514.

2⁷³⁰⁰⁹⁰ is an apocalyptic number.

730090 is a deficient number, since it is larger than the sum of its proper divisors (584090).

730090 is a wasteful number, since it uses less digits than its factorization.

730090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73016.

The product of its (nonzero) digits is 189, while the sum is 19.

The square root of 730090 is about 854.4530414247. The cubic root of 730090 is about 90.0448336294.

The spelling of 730090 in words is "seven hundred thirty thousand, ninety".