1730039920 has 80 divisors (see below), whose sum is σ = 4694842368. Its totient is φ = 580527360.

The previous prime is 1730039893. The next prime is 1730039923. The reversal of 1730039920 is 299300371.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1730039923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6546 + ... + 59185.

Almost surely, 2^1730039920 is an apocalyptic number.

1730039920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1730039920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2347421184).

1730039920 is an abundant number, since it is smaller than the sum of its proper divisors (2964802448).

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

1730039920 is a wasteful number, since it uses less digits than its factorization.

1730039920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65798 (or 65792 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 34.

The square root of 1730039920 is about 41593.7485687453. The cubic root of 1730039920 is about 1200.4720180119.

The spelling of 1730039920 in words is "one billion, seven hundred thirty million, thirty-nine thousand, nine hundred twenty".