81998979 (number)

81998979 is an odd 8-digits composite number following 81998978 and preceding 81998980. In scientific notation, it is written as 8.1998979 × 10^7. The sum of its digits is 60. It has a total of 5 prime factors and 32 positive divisors. There are 49260288 positive integers (up to 81998979) that are relatively prime to 81998979.

Interesting facts

Basic properties

Name

Name eighty-one million nine hundred ninety-eight thousand nine hundred seventy-nine

Notation

Scientific notation 8.1998979 × 10^7
Engineering notation 8.1998979 × 10^6

Prime Factorization of 81998979

Prime Factorization 3 × 29 × 43 × 23 × 953

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 81998979
Product of the distinct prime numbers

The prime factorization of 81998979 is 3 × 29 × 43 × 23 × 953. Since it has a total of 5 prime factors.

Most popular turbo-numbers

2, 3, 61, 46, 480, 267, 5655, 5368, 89323, 19687, 497673, 175390, 1042713, 7181901, 87913172, 90577627, 976095275, 236994161, 1109636659, 5131716355

Basic calculations (n = 81998979)

Multiplication

n×y
n×2 163997958
n×3 245996937
n×4 327995916
n×5 409994895

Division

n÷y
n÷2 40999489.5
n÷3 27332993
n÷3 20499744.75
n÷5 16399795.8

Exponentiation

ny
n2 6723832557042441
n3 5.5134740464444E+23
n4 4.5209924255144E+31
n5 3.7071676295891E+39

Nth Root

y√n
2√n 9055.3287626679
3√n 434.44634543296
4√n 95.159491185419
5√n 38.261473297546

Divisors of 81998979

1, 3, 23, 29, 43, 69, 87, 129, 667, 953, 989, 1247, 2001, 2859, 2967, 3741, 21919, 27637, 28681, 40979, 65757, 82911, 86043, 122937, 635651, 942517, 1188391, 1906953, 2827551, 3565173, 27332993, 81998979

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 -81998978
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 81998979 can be divided by 32 positive divisors. The sum of these divisors (counting 81998979) is 1, the average is 0.03125.

Base conversion 81998979

Base System Value
2 Binary 100111000110011010010000011
3 Ternary 12201021222110020
4 Quaternary 10320303102003
5 Quinary 131442431404
6 Senary 12045304523
8 Octal 470632203
10 Decimal 81998979
12 Duodecimal 23565143
16 Hexadecimal 4e33483
20 Vigesimal 15c9h8j
36 Base36 1ctitf

Cryptographic Hash Functions

md5 fd2e1182a6350b9cc895bbc704ebed83
sha1 64809b616f2625894039b91fe1cdab522341db75
sha256 461a456c08b5b333b0b4e2265d5d783a2a67112762c59d6777d94a269f2208de
sha512 eac97069c3eaab35ce645a5ff476877a826a4d056c53cc23f7f2f664890ed08dc76e908669c71deb5d351b3a7245625a1c5dc079510af36e32c20ef8a77e4fdb
ripemd-160 c0394e073e963088f9d691c5f429502f16e792b8

81998979 as geometric shapes

Circle

Radius = n
Diameter 163997958
Circumference 515214780.05653
Area 2.1123542965172E+16

Sphere

Radius = n
Volume 2.309478608009E+24
Surface area 8.449417186069E+16
Circumference 515214780.05653

Square

Length = n
Perimeter 327995916
Area 6723832557042441
Diagonal 115964068.20255

Cube

Length = n
Surface area 40342995342254646
Volume 5.5134740464444E+23
Space diagonal 142026397.79677

Equilateral Triangle

Length = n
Perimeter 245996937
Area 2.9115049025958E+15
Altitude 71013198.898387

Triangular Pyramid

Length = n
Surface area 2.9115049025958E+15
Volume 6.4976914768948E+22
Height 38654689.400849