208317230472 has 128 divisors (see below), whose sum is σ = 568540224000. Its totient is φ = 63220884480.

The previous prime is 208317230467. The next prime is 208317230479. The reversal of 208317230472 is 274032713802.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 208317230472.

It is not an unprimeable number, because it can be changed into a prime (208317230479) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27330822 + ... + 27338442.

It is an arithmetic number, because the mean of its divisors is an integer number (4441720500).

Almost surely, 2^208317230472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 208317230472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284270112000).

208317230472 is an abundant number, since it is smaller than the sum of its proper divisors (360222993528).

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

208317230472 is a wasteful number, since it uses less digits than its factorization.

208317230472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8831 (or 8827 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 39.

The spelling of 208317230472 in words is "two hundred eight billion, three hundred seventeen million, two hundred thirty thousand, four hundred seventy-two".