172850870 has 8 divisors (see below), whose sum is σ = 311131584. Its totient is φ = 69140344.

The previous prime is 172850869. The next prime is 172850879. The reversal of 172850870 is 78058271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172850879) 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 3 ways as a sum of consecutive naturals, for example, 8642534 + ... + 8642553.

It is an arithmetic number, because the mean of its divisors is an integer number (38891448).

Almost surely, 2^172850870 is an apocalyptic number.

172850870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172850870 is a deficient number, since it is larger than the sum of its proper divisors (138280714).

172850870 is a wasteful number, since it uses less digits than its factorization.

172850870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17285094.

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

The square root of 172850870 is about 13147.2761437493. The cubic root of 172850870 is about 557.0453115284.

The spelling of 172850870 in words is "one hundred seventy-two million, eight hundred fifty thousand, eight hundred seventy".