211000804 has 48 divisors (see below), whose sum is σ = 466276608. Its totient is φ = 81404928.

The previous prime is 211000799. The next prime is 211000819. The reversal of 211000804 is 408000112.

It is a happy number.

211000804 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1312 + ... + 20584.

It is an arithmetic number, because the mean of its divisors is an integer number (9714096).

Almost surely, 2^211000804 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211000804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233138304).

211000804 is an abundant number, since it is smaller than the sum of its proper divisors (255275804).

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

211000804 is a wasteful number, since it uses less digits than its factorization.

211000804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19324 (or 19322 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 211000804 is about 14525.8667211289. The cubic root of 211000804 is about 595.3349374720.

Adding to 211000804 its reverse (408000112), we get a palindrome (619000916).

The spelling of 211000804 in words is "two hundred eleven million, eight hundred four", and thus it is an aban number.