209613052 has 12 divisors (see below), whose sum is σ = 400170456. Its totient is φ = 95278640.

The previous prime is 209613037. The next prime is 209613101. The reversal of 209613052 is 250316902.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 209613052.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2381923 + ... + 2382010.

It is an arithmetic number, because the mean of its divisors is an integer number (33347538).

Almost surely, 2^209613052 is an apocalyptic number.

209613052 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

209613052 is a deficient number, since it is larger than the sum of its proper divisors (190557404).

209613052 is a wasteful number, since it uses less digits than its factorization.

209613052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4763948 (or 4763946 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 209613052 is about 14478.0196159558. The cubic root of 209613052 is about 594.0268932414.

Adding to 209613052 its reverse (250316902), we get a palindrome (459929954).

The spelling of 209613052 in words is "two hundred nine million, six hundred thirteen thousand, fifty-two".