730918 has 8 divisors (see below), whose sum is σ = 1131840. Its totient is φ = 353640.

The previous prime is 730913. The next prime is 730943. The reversal of 730918 is 819037.

730918 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×730918² = 1068482245448, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (730913) by changing a digit.

730918 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 3 ways as a sum of consecutive naturals, for example, 5833 + ... + 5956.

It is an arithmetic number, because the mean of its divisors is an integer number (141480).

2⁷³⁰⁹¹⁸ is an apocalyptic number.

730918 is a deficient number, since it is larger than the sum of its proper divisors (400922).

730918 is a wasteful number, since it uses less digits than its factorization.

730918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11822.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 730918 is about 854.9374246107. The cubic root of 730918 is about 90.0788609205.

The spelling of 730918 in words is "seven hundred thirty thousand, nine hundred eighteen".