172873143 has 32 divisors (see below), whose sum is σ = 268185600. Its totient is φ = 109922400.

The previous prime is 172873133. The next prime is 172873157. The reversal of 172873143 is 341378271.

It is not a de Polignac number, because 172873143 - 2⁶ = 172873079 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 172873098 and 172873107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172873133) 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 31 ways as a sum of consecutive naturals, for example, 57973 + ... + 60881.

It is an arithmetic number, because the mean of its divisors is an integer number (8380800).

Almost surely, 2^172873143 is an apocalyptic number.

172873143 is a deficient number, since it is larger than the sum of its proper divisors (95312457).

172873143 is a wasteful number, since it uses less digits than its factorization.

172873143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3020 (or 3014 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 172873143 is about 13148.1231740504. The cubic root of 172873143 is about 557.0692368488.

The spelling of 172873143 in words is "one hundred seventy-two million, eight hundred seventy-three thousand, one hundred forty-three".