81749 (number)

81749 is an odd 5-digits prime number following 81748 and preceding 81750. In scientific notation, it is written as 8.1749 × 10^4. The sum of its digits is 29. It has a total of 1 prime factors and 2 positive divisors. There are 81748 positive integers (up to 81749) that are relatively prime to 81749.

Interesting facts

Basic properties

Name

Name eighty-one thousand seven hundred forty-nine

Notation

Scientific notation 8.1749 × 10^4
Engineering notation 8.1749 × 10^3

Prime Factorization of 81749

Prime Factorization 81749

Composite number
ω Distinct Factors 1
Total number of distinct prime factors
Ω Total Factors 1
Total number of prime factors
rad Radical 81749
Product of the distinct prime numbers

The prime factorization of 81749 is 81749. Since it has a total of 1 prime factors.

Most popular turbo-numbers

1, 9, 82, 96, 459, 278, 3700, 156, 72196, 73444, 943903, 802115, 156746, 9056256, 30828233, 31335752, 749782744, 386730317, 4988398397, 4932895262

Basic calculations (n = 81749)

Multiplication

n×y
n×2 163498
n×3 245247
n×4 326996
n×5 408745

Division

n÷y
n÷2 40874.5
n÷3 27249.666666667
n÷3 20437.25
n÷5 16349.8

Exponentiation

ny
n2 6682899001
n3 546320310432749
n4 4.4661139057567E+19
n5 3.651003456817E+24

Nth Root

y√n
2√n 285.91782036103
3√n 43.400441712253
4√n 16.909104658764
5√n 9.6049805502139

Divisors of 81749

1, 81749

2 divisors

τ Total Divisors 2
Total number of the positive divisors of n
σ Sum of Divisors 81750
Sum of all the positive divisors of n
s Aliquot Sum 1
Sum of the proper positive divisors of n
A Arithmetic Mean 40875
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 285.91956910992
Returns the nth root of the product of n divisors
H Harmonic Mean 1.9999755351682
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81749 can be divided by 2 positive divisors. The sum of these divisors (counting 81749) is 81750, the average is 40875.

Base conversion 81749

Base System Value
2 Binary 10011111101010101
3 Ternary 11011010202
4 Quaternary 103331111
5 Quinary 10103444
6 Senary 1430245
8 Octal 237525
10 Decimal 81749
12 Duodecimal 3b385
16 Hexadecimal 13f55
20 Vigesimal a479
36 Base36 1r2t

Cryptographic Hash Functions

md5 4de26a1c0a3616fc451da00c47be2aa0
sha1 6e1ec09425b96aeccb017cb69286c9ebd10729cb
sha256 d942519ce364c5fa1c57287ec8a9a3b4d168d6c5fc502784055bf00672f8a8ca
sha512 1a4b1e9ede80557de9de1e43305285f8cef0d948de070d8f87a51afbdfe5a4bb22df1d1465e7bcd42e0ebcfc396757c6e4ef08d204098e747b2912be1f277fe9
ripemd-160 e7b988aaf073e4dbcb44a94e47041bd35b45835c

81749 as geometric shapes

Circle

Radius = n
Diameter 163498
Circumference 513644.11567662
Area 20994946406.224

Sphere

Radius = n
Volume 2.2884211650166E+15
Surface area 83979785624.897
Circumference 513644.11567662

Square

Length = n
Perimeter 326996
Area 6682899001
Diagonal 115610.54451044

Cube

Length = n
Surface area 40097394006
Volume 546320310432749
Space diagonal 141593.42146795

Equilateral Triangle

Length = n
Perimeter 245247
Area 2893780152.8958
Altitude 70796.710733974

Triangular Pyramid

Length = n
Surface area 2893780152.8958
Volume 64384466034489
Height 38536.848170146