208293871 has 4 divisors (see below), whose sum is σ = 208637632. Its totient is φ = 207950112.

The previous prime is 208293859. The next prime is 208293881. The reversal of 208293871 is 178392802.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 208293871 - 2¹¹ = 208291823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208293881) 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, 170970 + ... + 172183.

It is an arithmetic number, because the mean of its divisors is an integer number (52159408).

Almost surely, 2^208293871 is an apocalyptic number.

208293871 is a deficient number, since it is larger than the sum of its proper divisors (343761).

208293871 is an equidigital number, since it uses as much as digits as its factorization.

208293871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343760.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 208293871 is about 14432.3896496734. The cubic root of 208293871 is about 592.7781181690.

The spelling of 208293871 in words is "two hundred eight million, two hundred ninety-three thousand, eight hundred seventy-one".