211842380 has 24 divisors (see below), whose sum is σ = 445164720. Its totient is φ = 84680640.

The previous prime is 211842377. The next prime is 211842439. The reversal of 211842380 is 83248112.

211842380 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41150 + ... + 46010.

It is an arithmetic number, because the mean of its divisors is an integer number (18548530).

Almost surely, 2^211842380 is an apocalyptic number.

211842380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211842380 is an abundant number, since it is smaller than the sum of its proper divisors (233322340).

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

211842380 is a wasteful number, since it uses less digits than its factorization.

211842380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7049 (or 7047 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 211842380 is about 14554.8060790929. The cubic root of 211842380 is about 596.1253846376.

The spelling of 211842380 in words is "two hundred eleven million, eight hundred forty-two thousand, three hundred eighty".