81998982 (number)

81998982 is an even 8-digits composite number following 81998981 and preceding 81998983. In scientific notation, it is written as 8.1998982 × 10^7. The sum of its digits is 54. It has a total of 4 prime factors and 16 positive divisors. There are 25230384 positive integers (up to 81998982) that are relatively prime to 81998982.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1998982 × 10^7
Engineering notation 8.1998982 × 10^6

Prime Factorization of 81998982

Prime Factorization 2 × 9 × 13 × 350423

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81998982
Product of the distinct prime numbers

The prime factorization of 81998982 is 2 × 9 × 13 × 350423. Since it has a total of 4 prime factors.

Most popular turbo-numbers

6, 8, 75, 76, 900, 497, 6567, 3508, 74935, 29523, 685873, 683410, 8021632, 819142, 64128884, 75969324, 599904861, 476120023, 8026043429, 6505734933

Basic calculations (n = 81998982)

Multiplication

n×y
n×2 163997964
n×3 245996946
n×4 327995928
n×5 409994910

Division

n÷y
n÷2 40999491
n÷3 27332994
n÷3 20499745.5
n÷5 16399796.4

Exponentiation

ny
n2 6723833049036324
n3 5.5134746515893E+23
n4 4.5209930871313E+31
n5 3.707168307738E+39

Nth Root

y√n
2√n 9055.3289283162
3√n 434.44635073115
4√n 95.159492055791
5√n 38.261473577512

Divisors of 81998982

1, 2, 9, 13, 18, 26, 117, 234, 350423, 700846, 3153807, 4555499, 6307614, 9110998, 40999491, 81998982

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 -81998981
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 81998982 can be divided by 16 positive divisors. The sum of these divisors (counting 81998982) is 1, the average is 0.0625.

Base conversion 81998982

Base System Value
2 Binary 100111000110011010010000110
3 Ternary 12201021222110100
4 Quaternary 10320303102012
5 Quinary 131442431412
6 Senary 12045304530
8 Octal 470632206
10 Decimal 81998982
12 Duodecimal 23565146
16 Hexadecimal 4e33486
20 Vigesimal 15c9h92
36 Base36 1ctiti

Cryptographic Hash Functions

md5 f6de97a15293917063ab4587f4fb3707
sha1 cd9cd99390ee6faa4ee05ac4382951532235eae5
sha256 273169cc4477f5e0e835c0dd6d2f1c8e0d481778e20028337fd2bca76889b24d
sha512 bad09706eb0a6ef78bdfb30c73f9b9b65066a79c397ab776e291ebf9a1270161bd1387c9502619ce63252109029ca72f29ca75a063937a69c5a90648c1415b92
ripemd-160 3d690ce9530e7a9cf435674093811ae81291e3de

81998982 as geometric shapes

Circle

Radius = n
Diameter 163997964
Circumference 515214798.90608
Area 2.1123544510817E+16

Sphere

Radius = n
Volume 2.3094788614916E+24
Surface area 8.4494178043267E+16
Circumference 515214798.90608

Square

Length = n
Perimeter 327995928
Area 6723833049036324
Diagonal 115964072.44519

Cube

Length = n
Surface area 40342998294217944
Volume 5.5134746515893E+23
Space diagonal 142026402.99293

Equilateral Triangle

Length = n
Perimeter 245996946
Area 2.9115051156354E+15
Altitude 71013201.496463

Triangular Pyramid

Length = n
Surface area 2.9115051156354E+15
Volume 6.4976921900649E+22
Height 38654690.815062