210489312 has 96 divisors (see below), whose sum is σ = 615734784. Its totient is φ = 62412800.

The previous prime is 210489299. The next prime is 210489317. The reversal of 210489312 is 213984012.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 210489312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210489317) 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, 47512 + ... + 51752.

It is an arithmetic number, because the mean of its divisors is an integer number (6413904).

Almost surely, 2^210489312 is an apocalyptic number.

210489312 is a gapful number since it is divisible by the number (22) 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 210489312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (307867392).

210489312 is an abundant number, since it is smaller than the sum of its proper divisors (405245472).

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

210489312 is a wasteful number, since it uses less digits than its factorization.

210489312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4312 (or 4304 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 210489312 is about 14508.2497910671. The cubic root of 210489312 is about 594.8534931049.

The spelling of 210489312 in words is "two hundred ten million, four hundred eighty-nine thousand, three hundred twelve".