81421750 (number)

81421750 is an even 8-digits composite number following 81421749 and preceding 81421751. In scientific notation, it is written as 8.1421750 × 10^7. The sum of its digits is 28. It has a total of 4 prime factors and 16 positive divisors. There are 32076000 positive integers (up to 81421750) that are relatively prime to 81421750.

Interesting facts

Basic properties

Name

Name eighty-one million four hundred twenty-one thousand seven hundred fifty

Notation

Scientific notation 8.1421750 × 10^7
Engineering notation 8.1421750 × 10^6

Prime Factorization of 81421750

Prime Factorization 2 × 125 × 67 × 4861

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81421750
Product of the distinct prime numbers

The prime factorization of 81421750 is 2 × 125 × 67 × 4861. Since it has a total of 4 prime factors.

Most popular turbo-numbers

10, 1, 49, 31, 45, 491, 3606, 1138, 97633, 95363, 640839, 180278, 2011894, 4518478, 85273728, 45884196, 733478054, 273213706, 83698666, 880515171

Basic calculations (n = 81421750)

Multiplication

n×y
n×2 162843500
n×3 244265250
n×4 325687000
n×5 407108750

Division

n÷y
n÷2 40710875
n÷3 27140583.333333
n÷3 20355437.5
n÷5 16284350

Exponentiation

ny
n2 6629501373062500
n3 5.3978560342215E+23
n4 4.3950288455438E+31
n5 3.5785093990465E+39

Nth Root

y√n
2√n 9023.400135204
3√n 433.42452058639
4√n 94.991579285766
5√n 38.207452906988

Divisors of 81421750

1, 2, 67, 125, 134, 250, 4861, 8375, 9722, 16750, 325687, 607625, 651374, 1215250, 40710875, 81421750

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81421749
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81421750 can be divided by 16 positive divisors. The sum of these divisors (counting 81421750) is 1, the average is 0.0625.

Base conversion 81421750

Base System Value
2 Binary 100110110100110010110110110
3 Ternary 12200012122122101
4 Quaternary 10312212112312
5 Quinary 131320444000
6 Senary 12025052314
8 Octal 466462666
10 Decimal 81421750
12 Duodecimal 2332709a
16 Hexadecimal 4da65b6
20 Vigesimal 158he7a
36 Base36 1ch5fa

Cryptographic Hash Functions

md5 f9517500b63cf7a937be9055287f4d69
sha1 826727d93570e43205a67feeb55645914042a02d
sha256 d5c16875c4d30046f2c3d4612829874ddf1e597de151ec5264cf536da974c74a
sha512 1422ce168eac1c1ca62c67500c1c79745065041820ef15b579b61db4d97a707727c0b5778df6642cb5306f1c6dc6b80730bbdcd3b2d96ff45936e22cfdb74804
ripemd-160 0cea09624cf7420beb7af88da4906b8b9fab24ea

81421750 as geometric shapes

Circle

Radius = n
Diameter 162843500
Circumference 511587943.28485
Area 2.0827192810577E+16

Sphere

Radius = n
Volume 2.2610486482994E+24
Surface area 8.3308771242306E+16
Circumference 511587943.28485

Square

Length = n
Perimeter 325687000
Area 6629501373062500
Diagonal 115147743.12215

Cube

Length = n
Surface area 39777008238375000
Volume 5.3978560342215E+23
Space diagonal 141026607.84117

Equilateral Triangle

Length = n
Perimeter 244265250
Area 2.870658301748E+15
Altitude 70513303.920586

Triangular Pyramid

Length = n
Surface area 2.870658301748E+15
Volume 6.3614343427779E+22
Height 38382581.040717