172785080 has 64 divisors (see below), whose sum is σ = 420789600. Its totient is φ = 63475200.

The previous prime is 172785073. The next prime is 172785089. The reversal of 172785080 is 80587271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172785089) 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, 118355 + ... + 119805.

Almost surely, 2^172785080 is an apocalyptic number.

172785080 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 172785080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210394800).

172785080 is an abundant number, since it is smaller than the sum of its proper divisors (248004520).

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

172785080 is a wasteful number, since it uses less digits than its factorization.

172785080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1704 (or 1700 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 38.

The square root of 172785080 is about 13144.7738664459. The cubic root of 172785080 is about 556.9746288996.

The spelling of 172785080 in words is "one hundred seventy-two million, seven hundred eighty-five thousand, eighty".