210873 has 8 divisors (see below), whose sum is σ = 302848. Its totient is φ = 129744.

The previous prime is 210869. The next prime is 210901. The reversal of 210873 is 378012.

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

It is not a de Polignac number, because 210873 - 2² = 210869 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (210803) 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, 2665 + ... + 2742.

It is an arithmetic number, because the mean of its divisors is an integer number (37856).

2²¹⁰⁸⁷³ is an apocalyptic number.

It is an amenable number.

210873 is a deficient number, since it is larger than the sum of its proper divisors (91975).

210873 is a wasteful number, since it uses less digits than its factorization.

210873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5423.

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

The square root of 210873 is about 459.2091026972. The cubic root of 210873 is about 59.5214714307.

Adding to 210873 its reverse (378012), we get a palindrome (588885).

The spelling of 210873 in words is "two hundred ten thousand, eight hundred seventy-three".