210830 has 16 divisors (see below), whose sum is σ = 393120. Its totient is φ = 81312.

The previous prime is 210827. The next prime is 210839. The reversal of 210830 is 38012.

It is a Curzon number.

It is a plaindrome in base 11 and base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210839) 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, 74 + ... + 653.

It is an arithmetic number, because the mean of its divisors is an integer number (24570).

2²¹⁰⁸³⁰ is an apocalyptic number.

210830 is a deficient number, since it is larger than the sum of its proper divisors (182290).

210830 is a wasteful number, since it uses less digits than its factorization.

210830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 210830 is about 459.1622806808. The cubic root of 210830 is about 59.5174253978.

Adding to 210830 its reverse (38012), we get a palindrome (248842).

The spelling of 210830 in words is "two hundred ten thousand, eight hundred thirty".