210204220 has 48 divisors (see below), whose sum is σ = 466572960. Its totient is φ = 79329024.

The previous prime is 210204191. The next prime is 210204221. The reversal of 210204220 is 22402012.

It is a self number, because there is not a number n which added to its sum of digits gives 210204220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210204221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104262 + ... + 106258.

It is an arithmetic number, because the mean of its divisors is an integer number (9720270).

Almost surely, 2^210204220 is an apocalyptic number.

210204220 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 210204220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233286480).

210204220 is an abundant number, since it is smaller than the sum of its proper divisors (256368740).

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

210204220 is a wasteful number, since it uses less digits than its factorization.

210204220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2302 (or 2300 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 210204220 is about 14498.4212933685. The cubic root of 210204220 is about 594.5848102712.

Adding to 210204220 its reverse (22402012), we get a palindrome (232606232).

The spelling of 210204220 in words is "two hundred ten million, two hundred four thousand, two hundred twenty".