Base | Representation |
---|---|
bin | 11100011101000… |
… | …01010101010000 |
3 | 121122010120210022 |
4 | 32032201111100 |
5 | 442101000233 |
6 | 35403523012 |
7 | 5625545060 |
oct | 1616412520 |
9 | 548116708 |
10 | 238687568 |
11 | 112807559 |
12 | 67b29468 |
13 | 3a5b1662 |
14 | 239b33a0 |
15 | 15e4c398 |
hex | e3a1550 |
238687568 has 80 divisors (see below), whose sum is σ = 551214720. Its totient is φ = 97996800.
The previous prime is 238687529. The next prime is 238687591. The reversal of 238687568 is 865786832.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 270488 + ... + 271368.
It is an arithmetic number, because the mean of its divisors is an integer number (6890184).
Almost surely, 2238687568 is an apocalyptic number.
238687568 is a gapful number since it is divisible by the number (28) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 238687568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275607360).
238687568 is an abundant number, since it is smaller than the sum of its proper divisors (312527152).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
238687568 is a wasteful number, since it uses less digits than its factorization.
238687568 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 996 (or 990 counting only the distinct ones).
The product of its digits is 3870720, while the sum is 53.
The square root of 238687568 is about 15449.5167561966. The cubic root of 238687568 is about 620.3116435340.
The spelling of 238687568 in words is "two hundred thirty-eight million, six hundred eighty-seven thousand, five hundred sixty-eight".
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