172289193 has 8 divisors (see below), whose sum is σ = 233485056. Its totient is φ = 112976400.

The previous prime is 172289191. The next prime is 172289197. The reversal of 172289193 is 391982271.

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

It is not a de Polignac number, because 172289193 - 2¹ = 172289191 is a prime.

It is a super-3 number, since 3×172289193³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (172289191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 470553 + ... + 470918.

It is an arithmetic number, because the mean of its divisors is an integer number (29185632).

Almost surely, 2^172289193 is an apocalyptic number.

It is an amenable number.

172289193 is a deficient number, since it is larger than the sum of its proper divisors (61195863).

172289193 is an equidigital number, since it uses as much as digits as its factorization.

172289193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941535.

The product of its digits is 54432, while the sum is 42.

The square root of 172289193 is about 13125.8977978651. The cubic root of 172289193 is about 556.4412859270.

The spelling of 172289193 in words is "one hundred seventy-two million, two hundred eighty-nine thousand, one hundred ninety-three".