280173 has 8 divisors (see below), whose sum is σ = 379936. Its totient is φ = 183600.

The previous prime is 280139. The next prime is 280183. The reversal of 280173 is 371082.

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

It is not a de Polignac number, because 280173 - 2¹³ = 271981 is a prime.

It is a Duffinian number.

280173 is a lucky number.

It is a plaindrome in base 7 and base 16.

It is a zygodrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 583 + ... + 948.

It is an arithmetic number, because the mean of its divisors is an integer number (47492).

2²⁸⁰¹⁷³ is an apocalyptic number.

It is an amenable number.

280173 is a deficient number, since it is larger than the sum of its proper divisors (99763).

280173 is a wasteful number, since it uses less digits than its factorization.

280173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1595.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 280173 is about 529.3137066051. The cubic root of 280173 is about 65.4347971077.

Subtracting 280173 from its reverse (371082), we obtain a palindrome (90909).

The spelling of 280173 in words is "two hundred eighty thousand, one hundred seventy-three".