1730983840 has 48 divisors (see below), whose sum is σ = 4110282792. Its totient is φ = 688866304.

The previous prime is 1730983829. The next prime is 1730983853. The reversal of 1730983840 is 483890371.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1649334544 + 81649296 = 40612^2 + 9036^2 .

It is a super-2 number, since 2×1730983840² = 5992610108682291200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4062 + ... + 58978.

Almost surely, 2^1730983840 is an apocalyptic number.

1730983840 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 1730983840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2055141396).

1730983840 is an abundant number, since it is smaller than the sum of its proper divisors (2379298952).

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

1730983840 is a wasteful number, since it uses less digits than its factorization.

1730983840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55129 (or 55121 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 1730983840 is about 41605.0939188941. The cubic root of 1730983840 is about 1200.6903065250.

The spelling of 1730983840 in words is "one billion, seven hundred thirty million, nine hundred eighty-three thousand, eight hundred forty".