172850239 has 16 divisors (see below), whose sum is σ = 188496000. Its totient is φ = 157955616.

The previous prime is 172850213. The next prime is 172850257. The reversal of 172850239 is 932058271.

It is a cyclic number.

It is not a de Polignac number, because 172850239 - 2⁵ = 172850207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 172850198 and 172850207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172850269) 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 15 ways as a sum of consecutive naturals, for example, 66537 + ... + 69085.

It is an arithmetic number, because the mean of its divisors is an integer number (11781000).

Almost surely, 2^172850239 is an apocalyptic number.

172850239 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

172850239 is a deficient number, since it is larger than the sum of its proper divisors (15645761).

172850239 is a wasteful number, since it uses less digits than its factorization.

172850239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2694.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 172850239 is about 13147.2521463612. The cubic root of 172850239 is about 557.0446336878.

The spelling of 172850239 in words is "one hundred seventy-two million, eight hundred fifty thousand, two hundred thirty-nine".