209284130 has 32 divisors (see below), whose sum is σ = 428830848. Its totient is φ = 72793600.

The previous prime is 209284129. The next prime is 209284133. The reversal of 209284130 is 31482902.

It is a junction number, because it is equal to n+sod(n) for n = 209284093 and 209284102.

It is not an unprimeable number, because it can be changed into a prime (209284133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38831 + ... + 43890.

It is an arithmetic number, because the mean of its divisors is an integer number (13400964).

Almost surely, 2^209284130 is an apocalyptic number.

209284130 is an abundant number, since it is smaller than the sum of its proper divisors (219546718).

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

209284130 is a wasteful number, since it uses less digits than its factorization.

209284130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82762.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 209284130 is about 14466.6557987670. The cubic root of 209284130 is about 593.7160175565.

The spelling of 209284130 in words is "two hundred nine million, two hundred eighty-four thousand, one hundred thirty".