730728670 has 96 divisors (see below), whose sum is σ = 1589068800. Its totient is φ = 241061184.

The previous prime is 730728667. The next prime is 730728671. The reversal of 730728670 is 76827037.

730728670 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 (730728671) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1664311 + ... + 1664749.

It is an arithmetic number, because the mean of its divisors is an integer number (16552800).

Almost surely, 2^730728670 is an apocalyptic number.

730728670 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

730728670 is an abundant number, since it is smaller than the sum of its proper divisors (858340130).

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

730728670 is a wasteful number, since it uses less digits than its factorization.

730728670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582 (or 575 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 40.

The square root of 730728670 is about 27031.9934522040. The cubic root of 730728670 is about 900.7108252695.

The spelling of 730728670 in words is "seven hundred thirty million, seven hundred twenty-eight thousand, six hundred seventy".