730490 has 16 divisors (see below), whose sum is σ = 1392552. Its totient is φ = 274944.

The previous prime is 730487. The next prime is 730537. The reversal of 730490 is 94037.

It can be written as a sum of positive squares in 4 ways, for example, as 667489 + 63001 = 817^2 + 251^2 .

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1979 + ... + 2318.

2⁷³⁰⁴⁹⁰ is an apocalyptic number.

730490 is a deficient number, since it is larger than the sum of its proper divisors (662062).

730490 is a wasteful number, since it uses less digits than its factorization.

730490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4321.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 730490 is about 854.6870772394. The cubic root of 730490 is about 90.0612751447.

The spelling of 730490 in words is "seven hundred thirty thousand, four hundred ninety".