81998520 (number)

81998520 is an even 8-digits composite number following 81998519 and preceding 81998521. In scientific notation, it is written as 8.1998520 × 10^7. The sum of its digits is 42. It has a total of 6 prime factors and 32 positive divisors. There are 21662208 positive integers (up to 81998520) that are relatively prime to 81998520.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1998520 × 10^7
Engineering notation 8.1998520 × 10^6

Prime Factorization of 81998520

Prime Factorization 2 × 2 × 2 × 15 × 109 × 6269

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 20499630
Product of the distinct prime numbers

The prime factorization of 81998520 is 2 × 2 × 2 × 15 × 109 × 6269. Since it has a total of 6 prime factors.

Most popular turbo-numbers

7, 5, 81, 49, 4, 753, 8852, 1036, 52708, 10084, 358815, 899828, 2300024, 5789353, 72625306, 33749773, 508276563, 648572069, 1743931579, 8671124565

Basic calculations (n = 81998520)

Multiplication

n×y
n×2 163997040
n×3 245995560
n×4 327994080
n×5 409992600

Division

n÷y
n÷2 40999260
n÷3 27332840
n÷3 20499630
n÷5 16399704

Exponentiation

ny
n2 6723757282190400
n3 5.5133814597884E+23
n4 4.5208911989808E+31
n5 3.7070638739745E+39

Nth Root

y√n
2√n 9055.3034184394
3√n 434.44553480805
4√n 95.159358018218
5√n 38.261430462731

Divisors of 81998520

1, 2, 4, 8, 15, 30, 60, 109, 120, 218, 436, 872, 1635, 3270, 6269, 6540, 12538, 13080, 25076, 50152, 94035, 188070, 376140, 683321, 752280, 1366642, 2733284, 5466568, 10249815, 20499630, 40999260, 81998520

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 -81998519
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 81998520 can be divided by 32 positive divisors. The sum of these divisors (counting 81998520) is 1, the average is 0.03125.

Base conversion 81998520

Base System Value
2 Binary 100111000110011001010111000
3 Ternary 12201021221211020
4 Quaternary 10320303022320
5 Quinary 131442423040
6 Senary 12045302440
8 Octal 470631270
10 Decimal 81998520
12 Duodecimal 23564a20
16 Hexadecimal 4e332b8
20 Vigesimal 15c9g60
36 Base36 1ctigo

Cryptographic Hash Functions

md5 094181e862d613408718d97ee6f911d3
sha1 1982a9ce77c7d5f2a82a28cb789363913705f748
sha256 472c98fbe642b0c4717ad0b809028fd717b5686fd223ea66caaa027adce26564
sha512 396efb889487d1430c8419189932e6f782a586322365590de9b5101b9e0b1e14a05824af33448ed5411a99ba87eac000854ff251eb61a77c6978e79fe985ac68
ripemd-160 07efa5da1387720e7353f7635bb539eaca91ea95

81998520 as geometric shapes

Circle

Radius = n
Diameter 163997040
Circumference 515211896.07447
Area 2.112330648225E+16

Sphere

Radius = n
Volume 2.3094398254012E+24
Surface area 8.4493225929001E+16
Circumference 515211896.07447

Square

Length = n
Perimeter 327994080
Area 6723757282190400
Diagonal 115963419.07852

Cube

Length = n
Surface area 40342543693142400
Volume 5.5133814597884E+23
Space diagonal 142025602.78545

Equilateral Triangle

Length = n
Perimeter 245995560
Area 2.9114723076288E+15
Altitude 71012801.392726

Triangular Pyramid

Length = n
Surface area 2.9114723076288E+15
Volume 6.4975823624742E+22
Height 38654473.026174