209000030 has 32 divisors (see below), whose sum is σ = 387296640. Its totient is φ = 81169920.

The previous prime is 209000017. The next prime is 209000039. The reversal of 209000030 is 30000902.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 208999969 and 209000014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209000039) 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, 46022 + ... + 50358.

It is an arithmetic number, because the mean of its divisors is an integer number (12103020).

Almost surely, 2^209000030 is an apocalyptic number.

209000030 is a deficient number, since it is larger than the sum of its proper divisors (178296610).

209000030 is a wasteful number, since it uses less digits than its factorization.

209000030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4484.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 209000030 is about 14456.8333323726. The cubic root of 209000030 is about 593.4472424346.

Adding to 209000030 its reverse (30000902), we get a palindrome (239000932).

The spelling of 209000030 in words is "two hundred nine million, thirty", and thus it is an aban number.