172896143 has 32 divisors (see below), whose sum is σ = 214510080. Its totient is φ = 136080000.

The previous prime is 172896131. The next prime is 172896151. The reversal of 172896143 is 341698271.

It is a de Polignac number, because none of the positive numbers 2^k-172896143 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 172896143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172896043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 819308 + ... + 819518.

It is an arithmetic number, because the mean of its divisors is an integer number (6703440).

Almost surely, 2^172896143 is an apocalyptic number.

172896143 is a deficient number, since it is larger than the sum of its proper divisors (41613937).

172896143 is a wasteful number, since it uses less digits than its factorization.

172896143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399.

The product of its digits is 72576, while the sum is 41.

The square root of 172896143 is about 13148.9977945089. The cubic root of 172896143 is about 557.0939409450.

It can be divided in two parts, 17289 and 6143, that added together give a palindrome (23432).

The spelling of 172896143 in words is "one hundred seventy-two million, eight hundred ninety-six thousand, one hundred forty-three".