730418 has 12 divisors (see below), whose sum is σ = 1186938. Its totient is φ = 336960.

The previous prime is 730399. The next prime is 730421. The reversal of 730418 is 814037.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 413449 + 316969 = 643^2 + 563^2 .

It is a junction number, because it is equal to n+sod(n) for n = 730393 and 730402.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 743 + ... + 1418.

2⁷³⁰⁴¹⁸ is an apocalyptic number.

730418 is a deficient number, since it is larger than the sum of its proper divisors (456520).

730418 is a wasteful number, since it uses less digits than its factorization.

730418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2189 (or 2176 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 730418 is about 854.6449555225. The cubic root of 730418 is about 90.0583161150.

The spelling of 730418 in words is "seven hundred thirty thousand, four hundred eighteen".