210400205 has 16 divisors (see below), whose sum is σ = 277326720. Its totient is φ = 152526528.

The previous prime is 210400189. The next prime is 210400217. The reversal of 210400205 is 502004012.

It is not a de Polignac number, because 210400205 - 2⁴ = 210400189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 210400205.

It is a congruent number.

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, 45962 + ... + 50331.

It is an arithmetic number, because the mean of its divisors is an integer number (17332920).

Almost surely, 2^210400205 is an apocalyptic number.

It is an amenable number.

210400205 is a deficient number, since it is larger than the sum of its proper divisors (66926515).

210400205 is a wasteful number, since it uses less digits than its factorization.

210400205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96340.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 210400205 is about 14505.1785580185. The cubic root of 210400205 is about 594.7695409537.

Adding to 210400205 its reverse (502004012), we get a palindrome (712404217).

The spelling of 210400205 in words is "two hundred ten million, four hundred thousand, two hundred five".