730023 has 8 divisors (see below), whose sum is σ = 1112448. Its totient is φ = 417144.

The previous prime is 730021. The next prime is 730033. The reversal of 730023 is 320037.

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

It is not a de Polignac number, because 730023 - 2¹ = 730021 is a prime.

730023 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 729984 and 730011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (730021) 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 7 ways as a sum of consecutive naturals, for example, 17361 + ... + 17402.

It is an arithmetic number, because the mean of its divisors is an integer number (139056).

2⁷³⁰⁰²³ is an apocalyptic number.

730023 is a deficient number, since it is larger than the sum of its proper divisors (382425).

730023 is a wasteful number, since it uses less digits than its factorization.

730023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34773.

The product of its (nonzero) digits is 126, while the sum is 15.

The square root of 730023 is about 854.4138341577. The cubic root of 730023 is about 90.0420790885.

The spelling of 730023 in words is "seven hundred thirty thousand, twenty-three".