1730728912 has 20 divisors (see below), whose sum is σ = 3658131936. Its totient is φ = 786694880.

The previous prime is 1730728889. The next prime is 1730728913. The reversal of 1730728912 is 2198270371.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1730728913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4916668 + ... + 4917019.

Almost surely, 2^1730728912 is an apocalyptic number.

It is an amenable number.

1730728912 is an abundant number, since it is smaller than the sum of its proper divisors (1927403024).

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

1730728912 is a wasteful number, since it uses less digits than its factorization.

1730728912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9833706 (or 9833700 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 1730728912 is about 41602.0301427707. The cubic root of 1730728912 is about 1200.6313603544.

The spelling of 1730728912 in words is "one billion, seven hundred thirty million, seven hundred twenty-eight thousand, nine hundred twelve".