730318 has 4 divisors (see below), whose sum is σ = 1095480. Its totient is φ = 365158.

The previous prime is 730297. The next prime is 730321. The reversal of 730318 is 813037.

730318 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 813037 = 31 ⋅26227.

It is a super-2 number, since 2×730318² = 1066728762248, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 182578 + ... + 182581.

It is an arithmetic number, because the mean of its divisors is an integer number (273870).

2⁷³⁰³¹⁸ is an apocalyptic number.

730318 is a deficient number, since it is larger than the sum of its proper divisors (365162).

730318 is a wasteful number, since it uses less digits than its factorization.

730318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365161.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 730318 is about 854.5864496937. The cubic root of 730318 is about 90.0542060289.

It can be divided in two parts, 7 and 30318, that multiplied together give a triangular number (212226 = T₆₅₁).

The spelling of 730318 in words is "seven hundred thirty thousand, three hundred eighteen".