210020008 has 16 divisors (see below), whose sum is σ = 429586560. Its totient is φ = 95463600.

The previous prime is 210020003. The next prime is 210020039. The reversal of 210020008 is 800020012.

It is a self number, because there is not a number n which added to its sum of digits gives 210020008.

It is not an unprimeable number, because it can be changed into a prime (210020003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1193208 + ... + 1193383.

It is an arithmetic number, because the mean of its divisors is an integer number (26849160).

Almost surely, 2^210020008 is an apocalyptic number.

It is an amenable number.

210020008 is an abundant number, since it is smaller than the sum of its proper divisors (219566552).

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

210020008 is a wasteful number, since it uses less digits than its factorization.

210020008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2386608 (or 2386604 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 210020008 is about 14492.0670713325. The cubic root of 210020008 is about 594.4110718182.

The spelling of 210020008 in words is "two hundred ten million, twenty thousand, eight".