81445858 (number)

81445858 is an even 8-digits composite number following 81445857 and preceding 81445859. In scientific notation, it is written as 8.1445858 × 10^7. The sum of its digits is 43. It has a total of 5 prime factors and 32 positive divisors. There are 36495360 positive integers (up to 81445858) that are relatively prime to 81445858.

Interesting facts

Basic properties

Name

Name eighty-one million four hundred forty-five thousand eight hundred fifty-eight

Notation

Scientific notation 8.1445858 × 10^7
Engineering notation 8.1445858 × 10^6

Prime Factorization of 81445858

Prime Factorization 2 × 13 × 89 × 61 × 577

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 81445858
Product of the distinct prime numbers

The prime factorization of 81445858 is 2 × 13 × 89 × 61 × 577. Since it has a total of 5 prime factors.

Most popular turbo-numbers

3, 8, 18, 64, 981, 299, 6392, 2870, 97928, 20747, 725645, 435607, 4273156, 4842311, 41915741, 84204015, 875401432, 458267567, 6602059650, 9033650538

Basic calculations (n = 81445858)

Multiplication

n×y
n×2 162891716
n×3 244337574
n×4 325783432
n×5 407229290

Division

n÷y
n÷2 40722929
n÷3 27148619.333333
n÷3 20361464.5
n÷5 16289171.6

Exponentiation

ny
n2 6633427785356164
n3 5.4026521745937E+23
n4 4.4002364183535E+31
n5 3.5838103049565E+39

Nth Root

y√n
2√n 9024.7358964127
3√n 433.4672936261
4√n 94.99860997095
5√n 38.209715192441

Divisors of 81445858

1, 2, 13, 26, 61, 89, 122, 178, 577, 793, 1154, 1157, 1586, 2314, 5429, 7501, 10858, 15002, 35197, 51353, 70394, 70577, 102706, 141154, 457561, 667589, 915122, 1335178, 3132533, 6265066, 40722929, 81445858

32 divisors

τ Total Divisors 32
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81445857
Sum of the proper positive divisors of n
A Arithmetic Mean 0.03125
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 32
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81445858 can be divided by 32 positive divisors. The sum of these divisors (counting 81445858) is 1, the average is 0.03125.

Base conversion 81445858

Base System Value
2 Binary 100110110101100001111100010
3 Ternary 12200020212201021
4 Quaternary 10312230033202
5 Quinary 131322231413
6 Senary 12025400054
8 Octal 466541742
10 Decimal 81445858
12 Duodecimal 2333902a
16 Hexadecimal 4dac3e2
20 Vigesimal 1590eci
36 Base36 1cho0y

Cryptographic Hash Functions

md5 d034f358450d239ca5543369cecd28d5
sha1 dd9ecf10ae41017c47d5243342202d9f5b4b17f1
sha256 f135313a6275914a2b4f8fc3986e7139bf9260ddbd43b8d8aa1a006e64a983c9
sha512 d1abe24cb166e637339c39eb6b03613654aa9eb1701453d07a54c5a275f7c1f25b056d19a976874db4e790f1250ddc5deadd90684458a48d7163fb42e303e5d3
ripemd-160 9517c64909c4074336f94de603c8c01d43293f43

81445858 as geometric shapes

Circle

Radius = n
Diameter 162891716
Circumference 511739418.31623
Area 2.0839527998593E+16

Sphere

Radius = n
Volume 2.2630576508806E+24
Surface area 8.3358111994373E+16
Circumference 511739418.31623

Square

Length = n
Perimeter 325783432
Area 6633427785356164
Diagonal 115181836.98271

Cube

Length = n
Surface area 39800566712136984
Volume 5.4026521745937E+23
Space diagonal 141068364.12204

Equilateral Triangle

Length = n
Perimeter 244337574
Area 2.872358488144E+15
Altitude 70534182.06102

Triangular Pyramid

Length = n
Surface area 2.872358488144E+15
Volume 6.3670866484125E+22
Height 38393945.660904