730748640 has 96 divisors (see below), whose sum is σ = 2401975296. Its totient is φ = 186391040.

The previous prime is 730748581. The next prime is 730748653. The reversal of 730748640 is 46847037.

It is a happy number.

730748640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22056 + ... + 44135.

It is an arithmetic number, because the mean of its divisors is an integer number (25020576).

Almost surely, 2^730748640 is an apocalyptic number.

It is an amenable number.

730748640 is an abundant number, since it is smaller than the sum of its proper divisors (1671226656).

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

730748640 is a wasteful number, since it uses less digits than its factorization.

730748640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66232 (or 66224 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 39.

The square root of 730748640 is about 27032.3628268045. The cubic root of 730748640 is about 900.7190303357.

The spelling of 730748640 in words is "seven hundred thirty million, seven hundred forty-eight thousand, six hundred forty".