Number 400

Interestingness: 12 · Rank #109 of 1000

Visual representations

Binary image (n×n bits)
Square · P4(20) = 400
2⁴5²
Prime factorization

Representations of 400

Greek numeral
υ
Sanskrit numeral
४००
Arabic numeral
٤٠٠
Roman numeral
CD
Maya numeral
●
ↂ
ↂ
Chinese numeral
四百
Hebrew numeral
ת
Egyptian numeral
𓈖𓈖𓈖𓈖
Morse code
....-----------

400 in different numeral systems

Binary
110010000
Base-3
112211
Base-4
12100
Base-5
3100
Base-6
1504
Base-7
1111
Base-8
620
Duodecimal
294
Hex
190
Vigesimal
100
Base-24
gg
Base-36
b4
Negabinary
11010010000

Factorization

Prime factors: 2, 5
Divisors: 1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400
Sum of divisors other than 400: 561
Product of prime factors: 400 = 2 × 2 × 2 × 2 × 5 × 5

Number-theory characteristics (8)

Square Perfect Power Difference of 2 squares Odious number Powerful number Even Composite Abundant

Base-10 digit properties (2)

These depend on the decimal representation of the number.

Harshad Duck number

Related primes

Number 400 prime
Prime number before 400
Prime number after 400