10991 (number)

10991 is an odd 5-digits composite number following 10990 and preceding 10992. In scientific notation, it is written as 1.0991 × 10^4. The sum of its digits is 20. It has a total of 2 prime factors and 4 positive divisors. There are 10584 positive integers (up to 10991) that are relatively prime to 10991.

Interesting facts

Basic properties

Name

Name ten thousand nine hundred ninety-one

Notation

Scientific notation 1.0991 × 10^4
Engineering notation 1.0991 × 10^3

Prime Factorization of 10991

Prime Factorization 29 × 379

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 10991
Product of the distinct prime numbers

The prime factorization of 10991 is 29 × 379. Since it has a total of 2 prime factors.

Most popular turbo-numbers

3, 7, 61, 56, 867, 670, 6064, 1281, 93607, 87358, 643233, 196055, 3710355, 4816312, 8642446, 14431406, 799057995, 365778757, 7652698928, 9740061803

Basic calculations (n = 10991)

Multiplication

n×y
n×2 21982
n×3 32973
n×4 43964
n×5 54955

Division

n÷y
n÷2 5495.5
n÷3 3663.6666666667
n÷3 2747.75
n÷5 2198.2

Exponentiation

ny
n2 120802081
n3 1327735672271
n4 14593142773930561
n5 1.6039323222827E+20

Nth Root

y√n
2√n 104.83797022072
3√n 22.233733850494
4√n 10.239041469821
5√n 6.4299477163667

Divisors of 10991

1, 29, 379, 10991

4 divisors

τ Total Divisors 4
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -10990
Sum of the proper positive divisors of n
A Arithmetic Mean 0.25
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 4
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 10991 can be divided by 4 positive divisors. The sum of these divisors (counting 10991) is 1, the average is 0.25.

Base conversion 10991

Base System Value
2 Binary 10101011101111
3 Ternary 120002002
4 Quaternary 2223233
5 Quinary 322431
6 Senary 122515
8 Octal 25357
10 Decimal 10991
12 Duodecimal 643b
16 Hexadecimal 2aef
20 Vigesimal 179b
36 Base36 8hb

Cryptographic Hash Functions

md5 35d58f24d7a7701719c983a1ef1979b1
sha1 8c38704a2a88ad705bd145fbade827e335e01cf8
sha256 a602aed529e8acd86cf016a2006cd436e49406ad05a1397c1206b62d0f316923
sha512 83837a60adb7c4043c443beb68bbd0a6191a2170736657235e5f4010ad01a90db59c715fe159e4372ad05e8b8bc74a9f54f9571775ccd59f3e2651cb8a898be4
ripemd-160 94665c5944f0019b4d944cb1d0f6e8ef6411ec99

10991 as geometric shapes

Circle

Radius = n
Diameter 21982
Circumference 69058.489711211
Area 379510930.20796

Sphere

Radius = n
Volume 5561606178554.2
Surface area 1518043720.8318
Circumference 69058.489711211

Square

Length = n
Perimeter 43964
Area 120802081
Diagonal 15543.621264043

Cube

Length = n
Surface area 724812486
Volume 1327735672271
Space diagonal 19036.97042599

Equilateral Triangle

Length = n
Perimeter 32973
Area 52308835.488013
Altitude 9518.4852129948

Triangular Pyramid

Length = n
Surface area 52308835.488013
Volume 156475149581.02
Height 5181.2070880142