210305104 has 20 divisors (see below), whose sum is σ = 409911264. Its totient is φ = 104521568.

The previous prime is 210305093. The next prime is 210305141. The reversal of 210305104 is 401503012.

It is a super-4 number, since 4×210305104⁴ (a number of 34 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36682 + ... + 42025.

Almost surely, 2^210305104 is an apocalyptic number.

It is an amenable number.

210305104 is a deficient number, since it is larger than the sum of its proper divisors (199606160).

210305104 is a wasteful number, since it uses less digits than its factorization.

210305104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78882 (or 78876 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 210305104 is about 14501.9000134465. The cubic root of 210305104 is about 594.6799154035.

Adding to 210305104 its reverse (401503012), we get a palindrome (611808116).

The spelling of 210305104 in words is "two hundred ten million, three hundred five thousand, one hundred four".