81998917 (number)

81998917 is an odd 8-digits composite number following 81998916 and preceding 81998918. In scientific notation, it is written as 8.1998917 × 10^7. The sum of its digits is 52. It has a total of 5 prime factors and 24 positive divisors. There are 58893120 positive integers (up to 81998917) that are relatively prime to 81998917.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1998917 × 10^7
Engineering notation 8.1998917 × 10^6

Prime Factorization of 81998917

Prime Factorization 77 × 11 × 13 × 11 × 677

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 7454447
Product of the distinct prime numbers

The prime factorization of 81998917 is 77 × 11 × 13 × 11 × 677. Since it has a total of 5 prime factors.

Most popular turbo-numbers

4, 10, 89, 33, 681, 996, 7611, 1667, 89911, 28750, 807864, 972090, 6575998, 4937040, 8805521, 78721717, 247916403, 73215890, 967760581, 4094115519

Basic calculations (n = 81998917)

Multiplication

n×y
n×2 163997834
n×3 245996751
n×4 327995668
n×5 409994585

Division

n÷y
n÷2 40999458.5
n÷3 27332972.333333
n÷3 20499729.25
n÷5 16399783.4

Exponentiation

ny
n2 6723822389172889
n3 5.5134615401253E+23
n4 4.5209787521143E+31
n5 3.7071536145338E+39

Nth Root

y√n
2√n 9055.3253392686
3√n 434.44623593696
4√n 95.159473197725
5√n 38.261467511591

Divisors of 81998917

1, 11, 13, 77, 121, 143, 677, 847, 1001, 1573, 7447, 8801, 9317, 11011, 52129, 81917, 96811, 121121, 573419, 677677, 1064921, 6307609, 7454447, 81998917

24 divisors

τ Total Divisors 24
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81998916
Sum of the proper positive divisors of n
A Arithmetic Mean 0.041666666666667
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 24
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81998917 can be divided by 24 positive divisors. The sum of these divisors (counting 81998917) is 1, the average is 0.041666666666667.

Base conversion 81998917

Base System Value
2 Binary 100111000110011010001000101
3 Ternary 12201021222100221
4 Quaternary 10320303101011
5 Quinary 131442431132
6 Senary 12045304341
8 Octal 470632105
10 Decimal 81998917
12 Duodecimal 235650b1
16 Hexadecimal 4e33445
20 Vigesimal 15c9h5h
36 Base36 1ctirp

Cryptographic Hash Functions

md5 d31c6ce83208e3b79558473df973c19e
sha1 76e9dcc7f487703963e4bc852a23e24ce188bd2e
sha256 070b0d5016eba7f030402a3f21ccef690fbeafc59848f3aafb5c44a1c2abaf5e
sha512 61b8630a58c421a5384f59cd2096a34061fa3b8435e4b6900f571b9abf8e64007698f3c9f7fcf67460a3c7d91b80f084af69a264d3853e2956696b91a2c37f32
ripemd-160 f2aa11f82a6ab5c545c9dc3f63a42ccedac0823d

81998917 as geometric shapes

Circle

Radius = n
Diameter 163997834
Circumference 515214390.49904
Area 2.1123511021868E+16

Sphere

Radius = n
Volume 2.3094733693743E+24
Surface area 8.4494044087472E+16
Circumference 515214390.49904

Square

Length = n
Perimeter 327995668
Area 6723822389172889
Diagonal 115963980.52131

Cube

Length = n
Surface area 40342934335037334
Volume 5.5134615401253E+23
Space diagonal 142026290.40962

Equilateral Triangle

Length = n
Perimeter 245996751
Area 2.9115004997792E+15
Altitude 71013145.204812

Triangular Pyramid

Length = n
Surface area 2.9115004997792E+15
Volume 6.4976767380564E+22
Height 38654660.173769