1720842832 has 40 divisors (see below), whose sum is σ = 3464778240. Its totient is φ = 826976640.

The previous prime is 1720842821. The next prime is 1720842847. The reversal of 1720842832 is 2382480271.

It is a super-2 number, since 2×1720842832² = 5922600104891560448, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1720842791 and 1720842800.

It is a congruent number.

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, 95157 + ... + 111787.

It is an arithmetic number, because the mean of its divisors is an integer number (86619456).

Almost surely, 2^1720842832 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1720842832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1732389120).

1720842832 is an abundant number, since it is smaller than the sum of its proper divisors (1743935408).

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

1720842832 is a wasteful number, since it uses less digits than its factorization.

1720842832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16891 (or 16885 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 1720842832 is about 41483.0427042183. The cubic root of 1720842832 is about 1198.3409555147.

The spelling of 1720842832 in words is "one billion, seven hundred twenty million, eight hundred forty-two thousand, eight hundred thirty-two".