81486918 (number)

81486918 is an even 8-digits composite number following 81486917 and preceding 81486919. In scientific notation, it is written as 8.1486918 × 10^7. The sum of its digits is 45. It has a total of 5 prime factors and 32 positive divisors. There are 27022248 positive integers (up to 81486918) that are relatively prime to 81486918.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1486918 × 10^7
Engineering notation 8.1486918 × 10^6

Prime Factorization of 81486918

Prime Factorization 2 × 9 × 3 × 199 × 7583

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 81486918
Product of the distinct prime numbers

The prime factorization of 81486918 is 2 × 9 × 3 × 199 × 7583. Since it has a total of 5 prime factors.

Most popular turbo-numbers

4, 7, 39, 86, 344, 31, 7409, 5954, 50584, 87927, 749468, 962661, 1337281, 446323, 24852899, 2781897, 943124873, 79571294, 3576790631, 3730980268

Basic calculations (n = 81486918)

Multiplication

n×y
n×2 162973836
n×3 244460754
n×4 325947672
n×5 407434590

Division

n÷y
n÷2 40743459
n÷3 27162306
n÷3 20371729.5
n÷5 16297383.6

Exponentiation

ny
n2 6640117805138724
n3 5.4108273509768E+23
n4 4.409116446612E+31
n5 3.5928531033753E+39

Nth Root

y√n
2√n 9027.0104685881
3√n 433.54012391866
4√n 95.010580824391
5√n 38.213567014165

Divisors of 81486918

1, 2, 3, 6, 9, 18, 27, 54, 199, 398, 597, 1194, 1791, 3582, 5373, 7583, 10746, 15166, 22749, 45498, 68247, 136494, 204741, 409482, 1509017, 3018034, 4527051, 9054102, 13581153, 27162306, 40743459, 81486918

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 -81486917
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 81486918 can be divided by 32 positive divisors. The sum of these divisors (counting 81486918) is 1, the average is 0.03125.

Base conversion 81486918

Base System Value
2 Binary 100110110110110010001000110
3 Ternary 12200022222001000
4 Quaternary 10312312101012
5 Quinary 131330040133
6 Senary 12030314130
8 Octal 466662106
10 Decimal 81486918
12 Duodecimal 23358946
16 Hexadecimal 4db6446
20 Vigesimal 1595h5i
36 Base36 1cijpi

Cryptographic Hash Functions

md5 f07bf5a7b407f0224d885ffb3a8244da
sha1 222a5d53078930ab1db00ee7c1d51e035bc7ae25
sha256 62e30ab07d0d893dc8abca84d22025f1bf249329d0fe5fe31215d68cf88f07a8
sha512 2a525cca460e9e3ab9f99fabbf6e5458e35890f66b70171d222a37acdb1359d0296f4d1f0939b15bb749b89af46bc44f23bff7ff78b1695f6773fe83538ec05d
ripemd-160 c879fdef1c29f8d636e5d6b49c8e43f48e69adaa

81486918 as geometric shapes

Circle

Radius = n
Diameter 162973836
Circumference 511997405.90495
Area 2.0860545315595E+16

Sphere

Radius = n
Volume 2.2664820607562E+24
Surface area 8.3442181262378E+16
Circumference 511997405.90495

Square

Length = n
Perimeter 325947672
Area 6640117805138724
Diagonal 115239904.59158

Cube

Length = n
Surface area 39840706830832344
Volume 5.4108273509768E+23
Space diagonal 141139482.1282

Equilateral Triangle

Length = n
Perimeter 244460754
Area 2.8752553516858E+15
Altitude 70569741.064099

Triangular Pyramid

Length = n
Surface area 2.8752553516858E+15
Volume 6.3767211861756E+22
Height 38413301.530528