211986320 has 160 divisors (see below), whose sum is σ = 623793408. Its totient is φ = 65193984.

The previous prime is 211986319. The next prime is 211986329. The reversal of 211986320 is 23689112.

It is not an unprimeable number, because it can be changed into a prime (211986329) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 268967 + ... + 269753.

Almost surely, 2^211986320 is an apocalyptic number.

211986320 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 211986320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (311896704).

211986320 is an abundant number, since it is smaller than the sum of its proper divisors (411807088).

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

211986320 is a wasteful number, since it uses less digits than its factorization.

211986320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857 (or 851 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 211986320 is about 14559.7499978537. The cubic root of 211986320 is about 596.2603699996.

The spelling of 211986320 in words is "two hundred eleven million, nine hundred eighty-six thousand, three hundred twenty".