The number 520

Representation numerals

Greek numeral

φκ

Arabic numeral

٥٢٠

Roman numeral

DXX

Maya numeral



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Chinese numeral

五百二十

Hebrew numeral

תקכ
Numeral systems
Binary: 1000001000
Septimal (base 7): 1342
Octal: 1010
Hexadecimal: 208
Base 24: LG
Factorization
520 = 2 × 2 × 2 × 5 × 13
520 has 16 divisors: 1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520
Sum of all divisors other than 520: 740
Sums & differences
Sum of 2 squares: 520 = 182 + 142 = 222 + 62
Difference of 2 squares: 520 = 232 - 32 = 312 - 212 = 672 - 632 = 1312 - 1292
Goldbach conjecture: 520 = 509 + 11 = 503 + 17 = 491 + 29 = 479 + 41 = 467 + 53 = 461 + 59 = 449 + 71 = 431 + 89 = 419 + 101 = 389 + 131 = . . . (only the first 10 pairs are shown)
Characteristics
Related primes
The 520th prime number is: 3727
Previous prime number: 509 — Next prime number: 521
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