211812704 has 24 divisors (see below), whose sum is σ = 435138480. Its totient is φ = 101301376.

The previous prime is 211812701. The next prime is 211812709. The reversal of 211812704 is 407218112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211812701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143159 + ... + 144630.

It is an arithmetic number, because the mean of its divisors is an integer number (18130770).

Almost surely, 2^211812704 is an apocalyptic number.

It is an amenable number.

211812704 is an abundant number, since it is smaller than the sum of its proper divisors (223325776).

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

211812704 is a wasteful number, since it uses less digits than its factorization.

211812704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287822 (or 287814 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 211812704 is about 14553.7865863149. The cubic root of 211812704 is about 596.0975472064.

The spelling of 211812704 in words is "two hundred eleven million, eight hundred twelve thousand, seven hundred four".