210550404 has 12 divisors (see below), whose sum is σ = 491284304. Its totient is φ = 70183464.

The previous prime is 210550399. The next prime is 210550451. The reversal of 210550404 is 404055012.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8772922 + ... + 8772945.

Almost surely, 2^210550404 is an apocalyptic number.

It is an amenable number.

210550404 is an abundant number, since it is smaller than the sum of its proper divisors (280733900).

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

210550404 is a wasteful number, since it uses less digits than its factorization.

210550404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17545874 (or 17545872 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 210550404 is about 14510.3550611279. The cubic root of 210550404 is about 594.9110372371.

The spelling of 210550404 in words is "two hundred ten million, five hundred fifty thousand, four hundred four".