730785820 has 12 divisors (see below), whose sum is σ = 1534650264. Its totient is φ = 292314320.

The previous prime is 730785793. The next prime is 730785833. The reversal of 730785820 is 28587037.

730785820 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 an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18269626 + ... + 18269665.

It is an arithmetic number, because the mean of its divisors is an integer number (127887522).

Almost surely, 2^730785820 is an apocalyptic number.

It is an amenable number.

730785820 is an abundant number, since it is smaller than the sum of its proper divisors (803864444).

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

730785820 is a wasteful number, since it uses less digits than its factorization.

730785820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36539300 (or 36539298 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 730785820 is about 27033.0505122896. The cubic root of 730785820 is about 900.7343060697.

The spelling of 730785820 in words is "seven hundred thirty million, seven hundred eighty-five thousand, eight hundred twenty".