211049140 has 48 divisors (see below), whose sum is σ = 457087680. Its totient is φ = 81803520.

The previous prime is 211049119. The next prime is 211049149. The reversal of 211049140 is 41940112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211049149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132871 + ... + 134449.

It is an arithmetic number, because the mean of its divisors is an integer number (9522660).

Almost surely, 2^211049140 is an apocalyptic number.

211049140 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 211049140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228543840).

211049140 is an abundant number, since it is smaller than the sum of its proper divisors (246038540).

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

211049140 is a wasteful number, since it uses less digits than its factorization.

211049140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1792 (or 1790 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 211049140 is about 14527.5304164197. The cubic root of 211049140 is about 595.3803937166.

Adding to 211049140 its reverse (41940112), we get a palindrome (252989252).

The spelling of 211049140 in words is "two hundred eleven million, forty-nine thousand, one hundred forty".