81489480 (number)

81489480 is an even 8-digits composite number following 81489479 and preceding 81489481. In scientific notation, it is written as 8.1489480 × 10^7. The sum of its digits is 42. It has a total of 6 prime factors and 32 positive divisors. There are 20328192 positive integers (up to 81489480) that are relatively prime to 81489480.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1489480 × 10^7
Engineering notation 8.1489480 × 10^6

Prime Factorization of 81489480

Prime Factorization 2 × 2 × 2 × 285 × 103 × 347

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 20372370
Product of the distinct prime numbers

The prime factorization of 81489480 is 2 × 2 × 2 × 285 × 103 × 347. Since it has a total of 6 prime factors.

Most popular turbo-numbers

1, 3, 24, 90, 399, 839, 391, 273, 32345, 38274, 225020, 714497, 8487732, 2178475, 82524046, 43792571, 55128696, 923216752, 9091429141, 7468253414

Basic calculations (n = 81489480)

Multiplication

n×y
n×2 162978960
n×3 244468440
n×4 325957920
n×5 407447400

Division

n÷y
n÷2 40744740
n÷3 27163160
n÷3 20372370
n÷5 16297896

Exponentiation

ny
n2 6640535350670400
n3 5.4113377264775E+23
n4 4.4096709743503E+31
n5 3.593417946709E+39

Nth Root

y√n
2√n 9027.1523749187
3√n 433.54466746252
4√n 95.011327613704
5√n 38.213807302864

Divisors of 81489480

1, 2, 4, 8, 103, 206, 285, 347, 412, 570, 694, 824, 1140, 1388, 2280, 2776, 29355, 35741, 58710, 71482, 98895, 117420, 142964, 197790, 234840, 285928, 395580, 791160, 10186185, 20372370, 40744740, 81489480

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 -81489479
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 81489480 can be divided by 32 positive divisors. The sum of these divisors (counting 81489480) is 1, the average is 0.03125.

Base conversion 81489480

Base System Value
2 Binary 100110110110110111001001000
3 Ternary 12200100002112220
4 Quaternary 10312312321020
5 Quinary 131330130410
6 Senary 12030334040
8 Octal 466667110
10 Decimal 81489480
12 Duodecimal 2335a320
16 Hexadecimal 4db6e48
20 Vigesimal 15963e0
36 Base36 1ciloo

Cryptographic Hash Functions

md5 b74b2c37ff528d8ba6e83bf5a4667d2e
sha1 eda475bf673ac56fa147bf4ea8fc13a8166a3c65
sha256 a4231102d5a8438bfb242f001ef2a9dc78ea922000a0d1cb183b52cbcd93b129
sha512 48030a6763dcda611a02cb44a41f6a84ff3bfee7a4e2fd0b7471067ca7e146c6122bd0a390da3547ffcb6852dcc1e77c62fcd00b519a1657048d554a694f82bd
ripemd-160 7873231855564f2821223ac2c4dee4d2bd8e152c

81489480 as geometric shapes

Circle

Radius = n
Diameter 162978960
Circumference 512013503.4257
Area 2.0861857073569E+16

Sphere

Radius = n
Volume 2.266695846346E+24
Surface area 8.3447428294278E+16
Circumference 512013503.4257

Square

Length = n
Perimeter 325957920
Area 6640535350670400
Diagonal 115243527.80673

Cube

Length = n
Surface area 39843212104022400
Volume 5.4113377264775E+23
Space diagonal 141143919.64237

Equilateral Triangle

Length = n
Perimeter 244468440
Area 2.8754361542046E+15
Altitude 70571959.821184

Triangular Pyramid

Length = n
Surface area 2.8754361542046E+15
Volume 6.3773226694714E+22
Height 38414509.26891