209630230 has 32 divisors (see below), whose sum is σ = 420564960. Its totient is φ = 74764800.

The previous prime is 209630207. The next prime is 209630237. The reversal of 209630230 is 32036902.

It is a junction number, because it is equal to n+sod(n) for n = 209630195 and 209630204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209630237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29221 + ... + 35680.

It is an arithmetic number, because the mean of its divisors is an integer number (13142655).

Almost surely, 2^209630230 is an apocalyptic number.

209630230 is an abundant number, since it is smaller than the sum of its proper divisors (210934730).

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

209630230 is a wasteful number, since it uses less digits than its factorization.

209630230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64944.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 209630230 is about 14478.6128479216. The cubic root of 209630230 is about 594.0431198315.

The spelling of 209630230 in words is "two hundred nine million, six hundred thirty thousand, two hundred thirty".