730403 has 4 divisors (see below), whose sum is σ = 735048. Its totient is φ = 725760.

The previous prime is 730399. The next prime is 730421. The reversal of 730403 is 304037.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 304037 = 23 ⋅13219.

It is a cyclic number.

It is not a de Polignac number, because 730403 - 2² = 730399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (730003) 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, 2078 + ... + 2403.

It is an arithmetic number, because the mean of its divisors is an integer number (183762).

2⁷³⁰⁴⁰³ is an apocalyptic number.

730403 is a deficient number, since it is larger than the sum of its proper divisors (4645).

730403 is a wasteful number, since it uses less digits than its factorization.

730403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4644.

The product of its (nonzero) digits is 252, while the sum is 17.

The square root of 730403 is about 854.6361799035. The cubic root of 730403 is about 90.0576996260.

The spelling of 730403 in words is "seven hundred thirty thousand, four hundred three".