81998900 (number)

81998900 is an even 8-digits composite number following 81998899 and preceding 81998901. In scientific notation, it is written as 8.1998900 × 10^7. The sum of its digits is 44. It has a total of 4 prime factors and 12 positive divisors. There are 32799520 positive integers (up to 81998900) that are relatively prime to 81998900.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1998900 × 10^7
Engineering notation 8.1998900 × 10^6

Prime Factorization of 81998900

Prime Factorization 2 × 2 × 25 × 819989

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 40999450
Product of the distinct prime numbers

The prime factorization of 81998900 is 2 × 2 × 25 × 819989. Since it has a total of 4 prime factors.

Most popular turbo-numbers

4, 2, 48, 56, 902, 361, 3092, 4833, 46260, 79219, 518304, 192968, 8396232, 672774, 41668600, 88293411, 817360686, 878859132, 3992996026, 5345110501

Basic calculations (n = 81998900)

Multiplication

n×y
n×2 163997800
n×3 245996700
n×4 327995600
n×5 409994500

Division

n÷y
n÷2 40999450
n÷3 27332966.666667
n÷3 20499725
n÷5 16399780

Exponentiation

ny
n2 6723819601210000
n3 5.5134581109766E+23
n4 4.5209750029616E+31
n5 3.7071497717035E+39

Nth Root

y√n
2√n 9055.3244005944
3√n 434.44620591385
4√n 95.159468265614
5√n 38.261465925119

Divisors of 81998900

1, 2, 4, 25, 50, 100, 819989, 1639978, 3279956, 20499725, 40999450, 81998900

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81998899
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81998900 can be divided by 12 positive divisors. The sum of these divisors (counting 81998900) is 1, the average is 0.083333333333333.

Base conversion 81998900

Base System Value
2 Binary 100111000110011010000110100
3 Ternary 12201021222100022
4 Quaternary 10320303100310
5 Quinary 131442431100
6 Senary 12045304312
8 Octal 470632064
10 Decimal 81998900
12 Duodecimal 23565098
16 Hexadecimal 4e33434
20 Vigesimal 15c9h50
36 Base36 1ctir8

Cryptographic Hash Functions

md5 41041ce2bfd7551100e363e6954da310
sha1 aeeb01cfef4107e1fc14223e3285b59da8a976e9
sha256 ebbc20ba7590ead14a509362f9fe1f174b806b37fb3d1bf7098fe1e0e8982ce5
sha512 f5f352a26bfe259ac8dd7469b25348cb690e1ec5a50411c4fb19d5854c7b598c5d83f639b63205c2479bbfc6b42cff3fae1a709e1a049daba2bb6bf03e035da8
ripemd-160 5a15d36426c58aae12b201874fef9634cd5c4c84

81998900 as geometric shapes

Circle

Radius = n
Diameter 163997800
Circumference 515214283.68489
Area 2.1123502263224E+16

Sphere

Radius = n
Volume 2.3094719329759E+24
Surface area 8.4494009052898E+16
Circumference 515214283.68489

Square

Length = n
Perimeter 327995600
Area 6723819601210000
Diagonal 115963956.47968

Cube

Length = n
Surface area 40342917607260000
Volume 5.5134581109766E+23
Space diagonal 142026260.96476

Equilateral Triangle

Length = n
Perimeter 245996700
Area 2.9114992925558E+15
Altitude 71013130.48238

Triangular Pyramid

Length = n
Surface area 2.9114992925558E+15
Volume 6.4976726967659E+22
Height 38654652.159892