1440 is an even 4-digits composite number following 1439
and preceding 1441 . In scientific notation, it is written as 1.440 × 10^3.
The sum of its digits is 9. It has a total of 8 prime factors and 36 positive divisors.
There are 384 positive integers (up to 1440) that are relatively prime to 1440.
1440 has 36 divisors, whose sum is 4914
The reverse of 1440 is 0441
Previous prime number is 3
Is Prime? no
Number parity even
Number length 4
Sum of Digits 9
Digital Root 9
Name
one thousand four hundred forty
Scientific notation
1.440 × 10^3
Engineering notation
1.440 × 10^3
Prime Factorization
2 × 2 × 2 × 2 × 2 × 5 × 3 × 3
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
8
Total number of prime factors
rad
Radical
30
Product of the distinct prime numbers
The prime factorization of 1440 is 2 × 2 × 2 × 2 × 2 × 5 × 3 × 3.
Since it has a total of 8 prime factors.
10 , 6 , 30 , 40 , 530 , 531 , 7124 , 8481 , 79967 , 18166 , 86976 , 505404 , 8665088 , 347717 , 17628601 , 47952404 , 127802460 , 106880277 , 2185606781 , 5352083350
n×2
2880
n×3
4320
n×4
5760
n×5
7200
n÷2
720
n÷3
480
n÷3
360
n÷5
288
n2
2073600
n3
2985984000
n4
4299816960000
n5
6191736422400000
2 √n
37.947331922021
3 √n
11.292432346572
4 √n
6.160140576482
5 √n
4.2822547366766
1 , 2 , 3 , 4 , 5 , 6 , 8 , 9 , 10 , 12 , 15 , 16 , 18 , 20 , 24 , 30 , 32 , 36 , 40 , 45 , 48 , 60 , 72 , 80 , 90 , 96 , 120 , 144 , 160 , 180 , 240 , 288 , 360 , 480 , 720 , 1440
36 divisors
τ
Total Divisors
36
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-1439
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.027777777777778
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
1
Returns the nth root of the product of n divisors
H
Harmonic Mean
36
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 1440 can be divided by 36 positive divisors.
The sum of these divisors (counting 1440) is 1, the average is 0.027777777777778.
Base
System
Value
2
Binary
10110100000
3
Ternary
1222100
4
Quaternary
112200
5
Quinary
21230
6
Senary
10400
8
Octal
2640
10
Decimal
1440
12
Duodecimal
a00
16
Hexadecimal
5a0
20
Vigesimal
3c0
36
Base36
140
md5
f4a331b7a22d1b237565d8813a34d8ac
sha1
3c5174b71d24aa217f93fc1b7439c1ee25e11556
sha256
a4ff3ad278c7b0575a8e32ae08eebfb327e37762cb1a2caa793c431b9b2ca2c6
sha512
2ba582daa457ab6f5793bd820842e0f584e9724f0f40af213cdaeca568ece04ac400fd3573a370ea5e2a05fd4f09f63c242b2042af8a765fde47e1d5e9f616ed
ripemd-160
ef88d01f391a9f53244d58c4facd028fc8717591
Diameter
2880
Circumference
9047.7868423386
Area
6514406.5264838
Volume
12507660530.849
Surface area
26057626.105935
Circumference
9047.7868423386
Perimeter
5760
Area
2073600
Diagonal
2036.4675298173
Surface area
12441600
Volume
2985984000
Space diagonal
2494.1531628992
Perimeter
4320
Area
897895.13864371
Altitude
1247.0765814496
Surface area
897895.13864371
Volume
351901589.15242
Height
678.82250993909