211887950 has 12 divisors (see below), whose sum is σ = 394111680. Its totient is φ = 84755160.

The previous prime is 211887919. The next prime is 211887967. The reversal of 211887950 is 59788112.

It is a junction number, because it is equal to n+sod(n) for n = 211887898 and 211887907.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 2118830 + ... + 2118929.

It is an arithmetic number, because the mean of its divisors is an integer number (32842640).

Almost surely, 2^211887950 is an apocalyptic number.

211887950 is a deficient number, since it is larger than the sum of its proper divisors (182223730).

211887950 is a wasteful number, since it uses less digits than its factorization.

211887950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4237771 (or 4237766 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 41.

The square root of 211887950 is about 14556.3714572005. The cubic root of 211887950 is about 596.1681262995.

The spelling of 211887950 in words is "two hundred eleven million, eight hundred eighty-seven thousand, nine hundred fifty".