Number 1820

Representations of 1820
Greek numeral
͵αωκ
Arabic numeral
١٨٢٠
Roman numeral
MDCCCXX
Maya numeral
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ↂ
Chinese numeral
一千八百二十
Hebrew numeral
א׳ תתכ
1820 in different numeral systems
Binary
11100011100
Base-3
2111102
Base-4
130130
Base-5
24240
Base-6
12232
Base-7
5210
Base-8
3434
Hex
71c
Base-24
33k
Base-36
1ek
Factorization
Prime factors
2, 5, 7, 13
Divisors
1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820
Sum of divisors other than 1820
2884
Product of prime factors
1820 = 2 x 2 x 5 x 7 x 13
Characteristics
Pentagonal Even Composite
Related primes
Number 1820 prime
15607
Prime number before 1820
1811
Prime number after 1820
1823