211742768 has 20 divisors (see below), whose sum is σ = 411102408. Its totient is φ = 105651840.

The previous prime is 211742747. The next prime is 211742771. The reversal of 211742768 is 867247112.

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 3 ways as a sum of consecutive naturals, for example, 5621 + ... + 21332.

Almost surely, 2^211742768 is an apocalyptic number.

It is an amenable number.

211742768 is a deficient number, since it is larger than the sum of its proper divisors (199359640).

211742768 is a wasteful number, since it uses less digits than its factorization.

211742768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27452 (or 27446 counting only the distinct ones).

The product of its digits is 37632, while the sum is 38.

The square root of 211742768 is about 14551.3837142727. The cubic root of 211742768 is about 596.0319337874.

The spelling of 211742768 in words is "two hundred eleven million, seven hundred forty-two thousand, seven hundred sixty-eight".