730818 has 24 divisors (see below), whose sum is σ = 1727856. Its totient is φ = 221400.

The previous prime is 730811. The next prime is 730819. The reversal of 730818 is 818037.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 730791 and 730800.

It is not an unprimeable number, because it can be changed into a prime (730811) by changing a digit.

730818 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1648 + ... + 2043.

It is an arithmetic number, because the mean of its divisors is an integer number (71994).

2⁷³⁰⁸¹⁸ is an apocalyptic number.

730818 is an abundant number, since it is smaller than the sum of its proper divisors (997038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

730818 is a wasteful number, since it uses less digits than its factorization.

730818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3710 (or 3707 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 730818 is about 854.8789387978. The cubic root of 730818 is about 90.0747527091.

The spelling of 730818 in words is "seven hundred thirty thousand, eight hundred eighteen".