Base | Representation |
---|---|
bin | 11000111001111… |
… | …00100100100000 |
3 | 112120002222010020 |
4 | 30130330210200 |
5 | 411440232340 |
6 | 32421433440 |
7 | 5114513550 |
oct | 1434744440 |
9 | 476088106 |
10 | 208914720 |
11 | a7a217a3 |
12 | 59b6b880 |
13 | 34388ba1 |
14 | 1da63160 |
15 | 1351a9d0 |
hex | c73c920 |
208914720 has 192 divisors, whose sum is σ = 761031936. Its totient is φ = 47185920.
The previous prime is 208914707. The next prime is 208914733. The reversal of 208914720 is 27419802.
It is a happy number.
It is an interprime number because it is at equal distance from previous prime (208914707) and next prime (208914733).
It is an unprimeable number.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 325600 + ... + 326240.
It is an arithmetic number, because the mean of its divisors is an integer number (3963708).
Almost surely, 2208914720 is an apocalyptic number.
208914720 is a gapful number since it is divisible by the number (20) 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 208914720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (380515968).
208914720 is an abundant number, since it is smaller than the sum of its proper divisors (552117216).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
208914720 is a wasteful number, since it uses less digits than its factorization.
208914720 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 763 (or 755 counting only the distinct ones).
The product of its (nonzero) digits is 8064, while the sum is 33.
The square root of 208914720 is about 14453.8825233914. The cubic root of 208914720 is about 593.3664866660.
The spelling of 208914720 in words is "two hundred eight million, nine hundred fourteen thousand, seven hundred twenty".
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