209760130 has 16 divisors (see below), whose sum is σ = 378073080. Its totient is φ = 83791872.

The previous prime is 209760113. The next prime is 209760137. The reversal of 209760130 is 31067902.

It can be written as a sum of positive squares in 4 ways, for example, as 128165041 + 81595089 = 11321^2 + 9033^2 .

It is not an unprimeable number, because it can be changed into a prime (209760137) 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 7 ways as a sum of consecutive naturals, for example, 5949 + ... + 21328.

Almost surely, 2^209760130 is an apocalyptic number.

209760130 is a deficient number, since it is larger than the sum of its proper divisors (168312950).

209760130 is a wasteful number, since it uses less digits than its factorization.

209760130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28053.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 209760130 is about 14483.0980801761. The cubic root of 209760130 is about 594.1657965844.

The spelling of 209760130 in words is "two hundred nine million, seven hundred sixty thousand, one hundred thirty".