730718540 has 24 divisors (see below), whose sum is σ = 1560520080. Its totient is φ = 287332928.

The previous prime is 730718489. The next prime is 730718543. The reversal of 730718540 is 45817037.

730718540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 730718540.

It is not an unprimeable number, because it can be changed into a prime (730718543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308447 + ... + 310806.

It is an arithmetic number, because the mean of its divisors is an integer number (65021670).

Almost surely, 2^730718540 is an apocalyptic number.

It is an amenable number.

730718540 is an abundant number, since it is smaller than the sum of its proper divisors (829801540).

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

730718540 is a wasteful number, since it uses less digits than its factorization.

730718540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619321 (or 619319 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 730718540 is about 27031.8060809854. The cubic root of 730718540 is about 900.7066631032.

The spelling of 730718540 in words is "seven hundred thirty million, seven hundred eighteen thousand, five hundred forty".