211004 has 24 divisors (see below), whose sum is σ = 408240. Its totient is φ = 94976.

The previous prime is 210967. The next prime is 211007. The reversal of 211004 is 400112.

211004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 210982 and 211000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1919 + ... + 2025.

It is an arithmetic number, because the mean of its divisors is an integer number (17010).

2²¹¹⁰⁰⁴ is an apocalyptic number.

It is an amenable number.

211004 is a deficient number, since it is larger than the sum of its proper divisors (197236).

211004 is a wasteful number, since it uses less digits than its factorization.

211004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 211004 is about 459.3517170970. The cubic root of 211004 is about 59.5337943275.

Adding to 211004 its reverse (400112), we get a palindrome (611116).

The spelling of 211004 in words is "two hundred eleven thousand, four", and thus it is an iban number.