172073273 has 8 divisors (see below), whose sum is σ = 177405888. Its totient is φ = 166776624.

The previous prime is 172073263. The next prime is 172073287. The reversal of 172073273 is 372370271.

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

It is a cyclic number.

It is not a de Polignac number, because 172073273 - 2⁸ = 172073017 is a prime.

It is a super-2 number, since 2×172073273² = 59218422561865058, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (172073263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 890 + ... + 18572.

It is an arithmetic number, because the mean of its divisors is an integer number (22175736).

Almost surely, 2^172073273 is an apocalyptic number.

It is an amenable number.

172073273 is a deficient number, since it is larger than the sum of its proper divisors (5332615).

172073273 is a wasteful number, since it uses less digits than its factorization.

172073273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17983.

The product of its (nonzero) digits is 12348, while the sum is 32.

The square root of 172073273 is about 13117.6702580908. The cubic root of 172073273 is about 556.2087369467.

The spelling of 172073273 in words is "one hundred seventy-two million, seventy-three thousand, two hundred seventy-three".