1720883028 has 12 divisors (see below), whose sum is σ = 4015393760. Its totient is φ = 573627672.

The previous prime is 1720883027. The next prime is 1720883057. The reversal of 1720883028 is 8203880271.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1720883028² = 5922876792116897568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1720883027) 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, 71703448 + ... + 71703471.

Almost surely, 2^1720883028 is an apocalyptic number.

It is an amenable number.

1720883028 is an abundant number, since it is smaller than the sum of its proper divisors (2294510732).

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

1720883028 is a wasteful number, since it uses less digits than its factorization.

1720883028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143406926 (or 143406924 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 39.

The square root of 1720883028 is about 41483.5271885118. The cubic root of 1720883028 is about 1198.3502858531.

The spelling of 1720883028 in words is "one billion, seven hundred twenty million, eight hundred eighty-three thousand, twenty-eight".