208009072 has 20 divisors (see below), whose sum is σ = 412848576. Its totient is φ = 101467520.

The previous prime is 208009069. The next prime is 208009073. The reversal of 208009072 is 270900802.

It is a self number, because there is not a number n which added to its sum of digits gives 208009072.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208009073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157888 + ... + 159199.

Almost surely, 2^208009072 is an apocalyptic number.

It is an amenable number.

208009072 is a deficient number, since it is larger than the sum of its proper divisors (204839504).

208009072 is a wasteful number, since it uses less digits than its factorization.

208009072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317136 (or 317130 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 208009072 is about 14422.5196134379. The cubic root of 208009072 is about 592.5078275833.

Adding to 208009072 its reverse (270900802), we get a palindrome (478909874).

The spelling of 208009072 in words is "two hundred eight million, nine thousand, seventy-two".