210530500 has 48 divisors (see below), whose sum is σ = 479816064. Its totient is φ = 80546400.

The previous prime is 210530491. The next prime is 210530519. The reversal of 210530500 is 5035012.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2347 + ... + 20653.

It is an arithmetic number, because the mean of its divisors is an integer number (9996168).

Almost surely, 2^210530500 is an apocalyptic number.

210530500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210530500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239908032).

210530500 is an abundant number, since it is smaller than the sum of its proper divisors (269285564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

210530500 is a wasteful number, since it uses less digits than its factorization.

210530500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18349 (or 18337 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 210530500 is about 14509.6691898885. The cubic root of 210530500 is about 594.8922903682.

Adding to 210530500 its reverse (5035012), we get a palindrome (215565512).

The spelling of 210530500 in words is "two hundred ten million, five hundred thirty thousand, five hundred".