81689984 (number)

81689984 is an even 8-digits composite number following 81689983 and preceding 81689985. In scientific notation, it is written as 8.1689984 × 10^7. The sum of its digits is 53. It has a total of 10 prime factors and 64 positive divisors. There are 38664192 positive integers (up to 81689984) that are relatively prime to 81689984.

Interesting facts

Basic properties

Name

Name eighty-one million six hundred eighty-nine thousand nine hundred eighty-four

Notation

Scientific notation 8.1689984 × 10^7
Engineering notation 8.1689984 × 10^6

Prime Factorization of 81689984

Prime Factorization 2 × 2 × 2 × 2 × 2 × 2 × 2 × 59 × 29 × 373

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 10
Total number of prime factors
rad Radical 1276406
Product of the distinct prime numbers

The prime factorization of 81689984 is 2 × 2 × 2 × 2 × 2 × 2 × 2 × 59 × 29 × 373. Since it has a total of 10 prime factors.

Most popular turbo-numbers

1, 8, 50, 17, 357, 873, 916, 5981, 2410, 21670, 237090, 828859, 7366263, 6905196, 44640184, 74521102, 552622729, 747472187, 5586489232, 2377822554

Basic calculations (n = 81689984)

Multiplication

n×y
n×2 163379968
n×3 245069952
n×4 326759936
n×5 408449920

Division

n÷y
n÷2 40844992
n÷3 27229994.666667
n÷3 20422496
n÷5 16337996.8

Exponentiation

ny
n2 6673253485920256
n3 5.4513797049277E+23
n4 4.4532312087347E+31
n5 3.6378438618984E+39

Nth Root

y√n
2√n 9038.2511582717
3√n 433.89995357888
4√n 95.069717356642
5√n 38.232593755801

Divisors of 81689984

1, 2, 4, 8, 16, 29, 32, 58, 59, 64, 116, 118, 128, 232, 236, 373, 464, 472, 746, 928, 944, 1492, 1711, 1856, 1888, 2984, 3422, 3712, 3776, 5968, 6844, 7552, 10817, 11936, 13688, 21634, 22007, 23872, 27376, 43268, 44014, 47744, 54752, 86536, 88028, 109504, 173072, 176056, 219008, 346144, 352112, 638203, 692288, 704224, 1276406, 1384576, 1408448, 2552812, 2816896, 5105624, 10211248, 20422496, 40844992, 81689984

64 divisors

τ Total Divisors 64
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81689983
Sum of the proper positive divisors of n
A Arithmetic Mean 0.015625
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 64
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81689984 can be divided by 64 positive divisors. The sum of these divisors (counting 81689984) is 1, the average is 0.015625.

Base conversion 81689984

Base System Value
2 Binary 100110111100111110110000000
3 Ternary 12200201021120222
4 Quaternary 10313213312000
5 Quinary 131403034414
6 Senary 12034522212
8 Octal 467476600
10 Decimal 81689984
12 Duodecimal 23436368
16 Hexadecimal 4de7d80
20 Vigesimal 15ab4j4
36 Base36 1cmwe8

Cryptographic Hash Functions

md5 4dc4753a6274851961c37b7ae1e2e02c
sha1 c33758f5f86aba04148e42e8a5362f2068951e86
sha256 070eb96019d74537f02327c931cf8b1a006cc78165c2d6851ad72df0fbeca6ee
sha512 87da612a64ac7053ccd038a9264d9e4a8c430b2220fd94d16dbf6047217a28330203cc60769413b735613ffa2ad0a261e5b5449786272ea7871b99417eb2e8cc
ripemd-160 c7010fcaf1257b7ae792574618609c9a72267bf6

81689984 as geometric shapes

Circle

Radius = n
Diameter 163379968
Circumference 513273307.21254
Area 2.096464412691E+16

Sphere

Radius = n
Volume 2.2834685910572E+24
Surface area 8.3858576507638E+16
Circumference 513273307.21254

Square

Length = n
Perimeter 326759936
Area 6673253485920256
Diagonal 115527083.28284

Cube

Length = n
Surface area 40039520915521536
Volume 5.4513797049277E+23
Space diagonal 141491202.75749

Equilateral Triangle

Length = n
Perimeter 245069952
Area 2.88960352235E+15
Altitude 70745601.378744

Triangular Pyramid

Length = n
Surface area 2.88960352235E+15
Volume 6.4245125936285E+22
Height 38509027.760947