210030056 has 16 divisors (see below), whose sum is σ = 404450340. Its totient is φ = 102176640.

The previous prime is 210030031. The next prime is 210030061. The reversal of 210030056 is 650030012.

It can be written as a sum of positive squares in 2 ways, for example, as 206381956 + 3648100 = 14366^2 + 1910^2 .

It is a super-2 number, since 2×210030056² = 88225248846726272, which contains 22 as substring.

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, 354485 + ... + 355076.

Almost surely, 2^210030056 is an apocalyptic number.

It is an amenable number.

210030056 is a deficient number, since it is larger than the sum of its proper divisors (194420284).

210030056 is a wasteful number, since it uses less digits than its factorization.

210030056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709604 (or 709600 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 210030056 is about 14492.4137396087. The cubic root of 210030056 is about 594.4205511487.

Adding to 210030056 its reverse (650030012), we get a palindrome (860060068).

The spelling of 210030056 in words is "two hundred ten million, thirty thousand, fifty-six".