Search a number
-
+
208425975168 = 27329373531433
BaseRepresentation
bin1100001000011100100…
…1111111110110000000
3201220222120020120110210
43002013021333312000
511403324022201133
6235425523554120
721025663362165
oct3020711776600
9656876216423
10208425975168
1180436036044
123448952b940
1316867b998b8
14a13319206c
15564d064763
hex308727fd80

208425975168 has 256 divisors, whose sum is σ = 590279140800. Its totient is φ = 65036353536.

The previous prime is 208425975161. The next prime is 208425975187. The reversal of 208425975168 is 861579524802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208425975161) 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, 145446580 + ... + 145448012.

Almost surely, 2208425975168 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 208425975168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295139570400).

208425975168 is an abundant number, since it is smaller than the sum of its proper divisors (381853165632).

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

208425975168 is a wasteful number, since it uses less digits than its factorization.

208425975168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1869 (or 1857 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 57.

The spelling of 208425975168 in words is "two hundred eight billion, four hundred twenty-five million, nine hundred seventy-five thousand, one hundred sixty-eight".