730740 has 48 divisors (see below), whose sum is σ = 2157120. Its totient is φ = 184320.

The previous prime is 730727. The next prime is 730747. The reversal of 730740 is 47037.

730740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (730747) by changing a digit.

730740 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 15 ways as a sum of consecutive naturals, for example, 820 + ... + 1460.

It is an arithmetic number, because the mean of its divisors is an integer number (44940).

2⁷³⁰⁷⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 730740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1078560).

730740 is an abundant number, since it is smaller than the sum of its proper divisors (1426380).

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

730740 is a wasteful number, since it uses less digits than its factorization.

730740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672 (or 670 counting only the distinct ones).

The product of its (nonzero) digits is 588, while the sum is 21.

The square root of 730740 is about 854.8333170859. The cubic root of 730740 is about 90.0715480441.

Adding to 730740 its reverse (47037), we get a palindrome (777777).

The spelling of 730740 in words is "seven hundred thirty thousand, seven hundred forty".