1705834840 has 32 divisors (see below), whose sum is σ = 3867438960. Its totient is φ = 677123200.

The previous prime is 1705834829. The next prime is 1705834847. The reversal of 1705834840 is 484385071.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 1705834793 and 1705834802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1705834847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157531 + ... + 168010.

Almost surely, 2^1705834840 is an apocalyptic number.

1705834840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1705834840 is an abundant number, since it is smaller than the sum of its proper divisors (2161604120).

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

1705834840 is a wasteful number, since it uses less digits than its factorization.

1705834840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325683 (or 325679 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 1705834840 is about 41301.7534736723. The cubic root of 1705834840 is about 1194.8470804481.

The spelling of 1705834840 in words is "one billion, seven hundred five million, eight hundred thirty-four thousand, eight hundred forty".