210423320 has 64 divisors (see below), whose sum is σ = 496247040. Its totient is φ = 80150400.

The previous prime is 210423293. The next prime is 210423341. The reversal of 210423320 is 23324012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 304175 + ... + 304865.

It is an arithmetic number, because the mean of its divisors is an integer number (7753860).

Almost surely, 2^210423320 is an apocalyptic number.

210423320 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 210423320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248123520).

210423320 is an abundant number, since it is smaller than the sum of its proper divisors (285823720).

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

210423320 is a wasteful number, since it uses less digits than its factorization.

210423320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056 (or 1052 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 210423320 is about 14505.9753205360. The cubic root of 210423320 is about 594.7913210252.

Adding to 210423320 its reverse (23324012), we get a palindrome (233747332).

The spelling of 210423320 in words is "two hundred ten million, four hundred twenty-three thousand, three hundred twenty".