211984144 has 10 divisors (see below), whose sum is σ = 410719310. Its totient is φ = 105992064.

The previous prime is 211984133. The next prime is 211984163. The reversal of 211984144 is 441489112.

It can be written as a sum of positive squares in only one way, i.e., 200505600 + 11478544 = 14160^2 + 3388^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6624489 + ... + 6624520.

It is an arithmetic number, because the mean of its divisors is an integer number (41071931).

Almost surely, 2^211984144 is an apocalyptic number.

It is an amenable number.

211984144 is a deficient number, since it is larger than the sum of its proper divisors (198735166).

211984144 is a wasteful number, since it uses less digits than its factorization.

211984144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13249017 (or 13249011 counting only the distinct ones).

The product of its digits is 9216, while the sum is 34.

The square root of 211984144 is about 14559.6752711041. The cubic root of 211984144 is about 596.2583298255.

The spelling of 211984144 in words is "two hundred eleven million, nine hundred eighty-four thousand, one hundred forty-four".