Base | Representation |
---|---|
bin | 11000110101110… |
… | …11101111000000 |
3 | 112112010011020100 |
4 | 30122323233000 |
5 | 411321341013 |
6 | 32402242400 |
7 | 5110155204 |
oct | 1432735700 |
9 | 475104210 |
10 | 208387008 |
11 | a76a1275 |
12 | 59956400 |
13 | 3423292b |
14 | 1d966b04 |
15 | 13464473 |
hex | c6bbbc0 |
208387008 has 84 divisors (see below), whose sum is σ = 599656408. Its totient is φ = 69189120.
The previous prime is 208387007. The next prime is 208387019. The reversal of 208387008 is 800783802.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (208387007) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 190110 + ... + 191202.
Almost surely, 2208387008 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 208387008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (299828204).
208387008 is an abundant number, since it is smaller than the sum of its proper divisors (391269400).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
208387008 is a wasteful number, since it uses less digits than its factorization.
208387008 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1442 (or 1429 counting only the distinct ones).
The product of its (nonzero) digits is 21504, while the sum is 36.
The square root of 208387008 is about 14435.6159549913. The cubic root of 208387008 is about 592.8664570601.
The spelling of 208387008 in words is "two hundred eight million, three hundred eighty-seven thousand, eight".
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