211000836 has 12 divisors (see below), whose sum is σ = 492335312. Its totient is φ = 70333608.

The previous prime is 211000819. The next prime is 211000841. The reversal of 211000836 is 638000112.

211000836 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

211000836 is strictly pandigital in base 9.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8791690 + ... + 8791713.

Almost surely, 2^211000836 is an apocalyptic number.

It is an amenable number.

211000836 is an abundant number, since it is smaller than the sum of its proper divisors (281334476).

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

211000836 is a wasteful number, since it uses less digits than its factorization.

211000836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17583410 (or 17583408 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 211000836 is about 14525.8678226122. The cubic root of 211000836 is about 595.3349675678.

Adding to 211000836 its reverse (638000112), we get a palindrome (849000948).

The spelling of 211000836 in words is "two hundred eleven million, eight hundred thirty-six", and thus it is an aban number.