210200020 has 24 divisors (see below), whose sum is σ = 442159200. Its totient is φ = 83939232.

The previous prime is 210199999. The next prime is 210200077. The reversal of 210200020 is 20002012.

It is a happy number.

210200020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 210199976 and 210200012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3891 + ... + 20869.

It is an arithmetic number, because the mean of its divisors is an integer number (18423300).

Almost surely, 2^210200020 is an apocalyptic number.

210200020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210200020 is an abundant number, since it is smaller than the sum of its proper divisors (231959180).

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

210200020 is a wasteful number, since it uses less digits than its factorization.

210200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17607 (or 17605 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 210200020 is about 14498.2764492887. The cubic root of 210200020 is about 594.5808501971.

Adding to 210200020 its reverse (20002012), we get a palindrome (230202032).

The spelling of 210200020 in words is "two hundred ten million, two hundred thousand, twenty".