730784720 has 20 divisors (see below), whose sum is σ = 1699074660. Its totient is φ = 292313856.

The previous prime is 730784701. The next prime is 730784737. The reversal of 730784720 is 27487037.

It can be written as a sum of positive squares in 2 ways, for example, as 269222464 + 461562256 = 16408^2 + 21484^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4567325 + ... + 4567484.

It is an arithmetic number, because the mean of its divisors is an integer number (84953733).

Almost surely, 2^730784720 is an apocalyptic number.

It is an amenable number.

730784720 is an abundant number, since it is smaller than the sum of its proper divisors (968289940).

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

730784720 is a wasteful number, since it uses less digits than its factorization.

730784720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9134822 (or 9134816 counting only the distinct ones).

The product of its (nonzero) digits is 65856, while the sum is 38.

The square root of 730784720 is about 27033.0301668163. The cubic root of 730784720 is about 900.7338541324.

The spelling of 730784720 in words is "seven hundred thirty million, seven hundred eighty-four thousand, seven hundred twenty".