209613230 has 16 divisors (see below), whose sum is σ = 399498480. Its totient is φ = 78913152.

The previous prime is 209613203. The next prime is 209613233. The reversal of 209613230 is 32316902.

It is a self number, because there is not a number n which added to its sum of digits gives 209613230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209613233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 616340 + ... + 616679.

It is an arithmetic number, because the mean of its divisors is an integer number (24968655).

Almost surely, 2^209613230 is an apocalyptic number.

209613230 is a deficient number, since it is larger than the sum of its proper divisors (189885250).

209613230 is a wasteful number, since it uses less digits than its factorization.

209613230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1233043.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 209613230 is about 14478.0257632040. The cubic root of 209613230 is about 594.0270613873.

The spelling of 209613230 in words is "two hundred nine million, six hundred thirteen thousand, two hundred thirty".