208208045 has 16 divisors (see below), whose sum is σ = 259468272. Its totient is φ = 160266240.

The previous prime is 208208041. The next prime is 208208051. The reversal of 208208045 is 540802802.

It can be written as a sum of positive squares in 8 ways, for example, as 12292036 + 195916009 = 3506^2 + 13997^2 .

It is not a de Polignac number, because 208208045 - 2² = 208208041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 208207999 and 208208017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208208041) 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 15 ways as a sum of consecutive naturals, for example, 8009 + ... + 21921.

It is an arithmetic number, because the mean of its divisors is an integer number (16216767).

Almost surely, 2^208208045 is an apocalyptic number.

It is an amenable number.

208208045 is a deficient number, since it is larger than the sum of its proper divisors (51260227).

208208045 is a wasteful number, since it uses less digits than its factorization.

208208045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14032.

The product of its (nonzero) digits is 5120, while the sum is 29.

The square root of 208208045 is about 14429.4159618468. The cubic root of 208208045 is about 592.6966903225.

The spelling of 208208045 in words is "two hundred eight million, two hundred eight thousand, forty-five".