81998889 (number)

81998889 is an odd 8-digits composite number following 81998888 and preceding 81998890. In scientific notation, it is written as 8.1998889 × 10^7. The sum of its digits is 60. It has a total of 4 prime factors and 16 positive divisors. There are 44064000 positive integers (up to 81998889) that are relatively prime to 81998889.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1998889 × 10^7
Engineering notation 8.1998889 × 10^6

Prime Factorization of 81998889

Prime Factorization 7 × 2869 × 3 × 1361

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81998889
Product of the distinct prime numbers

The prime factorization of 81998889 is 7 × 2869 × 3 × 1361. Since it has a total of 4 prime factors.

Most popular turbo-numbers

9, 2, 45, 93, 49, 380, 1390, 1493, 20854, 67788, 454870, 853643, 9892209, 5849105, 93981970, 88703715, 177978101, 98121362, 3640230202, 5583894202

Basic calculations (n = 81998889)

Multiplication

n×y
n×2 163997778
n×3 245996667
n×4 327995556
n×5 409994445

Division

n÷y
n÷2 40999444.5
n÷3 27332963
n÷3 20499722.25
n÷5 16399777.8

Exponentiation

ny
n2 6723817797234321
n3 5.5134558921164E+23
n4 4.5209725770405E+31
n5 3.7071472851679E+39

Nth Root

y√n
2√n 9055.3237932169
3√n 434.44618648713
4√n 95.159465074247
5√n 38.261464898578

Divisors of 81998889

1, 3, 7, 21, 1361, 2869, 4083, 8607, 9527, 20083, 28581, 60249, 3904709, 11714127, 27332963, 81998889

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 -81998888
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 81998889 can be divided by 16 positive divisors. The sum of these divisors (counting 81998889) is 1, the average is 0.0625.

Base conversion 81998889

Base System Value
2 Binary 100111000110011010000101001
3 Ternary 12201021222022220
4 Quaternary 10320303100221
5 Quinary 131442431024
6 Senary 12045304253
8 Octal 470632051
10 Decimal 81998889
12 Duodecimal 23565089
16 Hexadecimal 4e33429
20 Vigesimal 15c9h49
36 Base36 1ctiqx

Cryptographic Hash Functions

md5 7bb93b20e01ea08ae4c35d1357ec332b
sha1 31a13566b8db9c3b682be0a05d7b62f3f314b718
sha256 f7ac5164bec453fd7139a0cafe7b759f0764facb1ca0dca32efcf0a9de904c31
sha512 facb71041e9da46c0961f14f6e750473a2d9759208338c6ff1f2f46eadc6a5cdaa82dcf7f430d6bba23cb51f3aa81ecbc399e44e2baa0e9d0c3d85de83880a9d
ripemd-160 302784bba951027c32e96a497152eaa972650593

81998889 as geometric shapes

Circle

Radius = n
Diameter 163997778
Circumference 515214214.56985
Area 2.1123496595868E+16

Sphere

Radius = n
Volume 2.3094710035419E+24
Surface area 8.4493986383471E+16
Circumference 515214214.56985

Square

Length = n
Perimeter 327995556
Area 6723817797234321
Diagonal 115963940.92333

Cube

Length = n
Surface area 40342906783405926
Volume 5.5134558921164E+23
Space diagonal 142026241.9122

Equilateral Triangle

Length = n
Perimeter 245996667
Area 2.9114985114114E+15
Altitude 71013120.9561

Triangular Pyramid

Length = n
Surface area 2.9114985114114E+15
Volume 6.4976700818141E+22
Height 38654646.974442