208528817 has 12 divisors (see below), whose sum is σ = 253164480. Its totient is φ = 168223296.

The previous prime is 208528799. The next prime is 208528883. The reversal of 208528817 is 718825802.

It is not a de Polignac number, because 208528817 - 2¹⁴ = 208512433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (208528417) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49517 + ... + 53562.

It is an arithmetic number, because the mean of its divisors is an integer number (21097040).

Almost surely, 2^208528817 is an apocalyptic number.

It is an amenable number.

208528817 is a deficient number, since it is larger than the sum of its proper divisors (44635663).

208528817 is a wasteful number, since it uses less digits than its factorization.

208528817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103120 (or 103103 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 41.

The square root of 208528817 is about 14440.5268948193. The cubic root of 208528817 is about 593.0009099969. Note that the first 3 decimals are identical.

The spelling of 208528817 in words is "two hundred eight million, five hundred twenty-eight thousand, eight hundred seventeen".