1. Numbers
  2. Compare 2 vs 28

Compare 2 vs 28

Property228
Typeprimecomposite number
Unique factors12
Total factors13
Prime factorization2122 × 71
Prime factorization22 × 2 × 7
Divisors count26
Divisors1, 21, 2, 4, 7, 14, 28
Number of properties260
Additive primes1st 
Bell primes1st 
Chen primes1st 
Class 1+ primes1st 
Dihedral primes1st 
Euclid primes1st 
Factorial primes1st 
Fibonacci primes1st 
Isolated primes1st 
Kynea primes1st 
Left-truncatable primes1st 
Lucas primes1st 
Mills primes1st 
Multiplicative primes1st 
Palindromic primes1st 
Pierpont primes1st 
Pierpont primes of the 2nd kind1st 
Primes1st 
Quartan primes1st 
Restricted left-truncatable primes1st 
Right-truncatable primes1st 
Sophie germain primes1st 
Thabit primes1st 
Two-sided primes1st 
Ulam primes1st 
Wedderburn-etherington primes1st 
Roman numberalsIIXXVIII
Base 2102111002
Base 32310013
Base 4241304
Base 5251035
Base 626446
Base 727407
Base 828348
Base 929319
Base 102102810
Base 112112611
Base 122122412
Base 132132213
Base 142142014
Base 152151d15
Base 162161c16
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