208789245 has 112 divisors (see below), whose sum is σ = 440697600. Its totient is φ = 94874976.

The previous prime is 208789213. The next prime is 208789249. The reversal of 208789245 is 542987802.

It is not a de Polignac number, because 208789245 - 2⁵ = 208789213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 208789245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208789249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 1250152 + ... + 1250318.

It is an arithmetic number, because the mean of its divisors is an integer number (3934800).

Almost surely, 2^208789245 is an apocalyptic number.

It is an amenable number.

208789245 is an abundant number, since it is smaller than the sum of its proper divisors (231908355).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

208789245 is an frugal number, since it uses more digits than its factorization.

208789245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211 (or 182 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 208789245 is about 14449.5413422018. The cubic root of 208789245 is about 593.2476701295.

The spelling of 208789245 in words is "two hundred eight million, seven hundred eighty-nine thousand, two hundred forty-five".