81897946 (number)

81897946 is an even 8-digits composite number following 81897945 and preceding 81897947. In scientific notation, it is written as 8.1897946 × 10^7. The sum of its digits is 52. It has a total of 4 prime factors and 16 positive divisors. There are 36777024 positive integers (up to 81897946) that are relatively prime to 81897946.

Interesting facts

Basic properties

Name

Name eighty-one million eight hundred ninety-seven thousand nine hundred forty-six

Notation

Scientific notation 8.1897946 × 10^7
Engineering notation 8.1897946 × 10^6

Prime Factorization of 81897946

Prime Factorization 2 × 37 × 13 × 85133

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81897946
Product of the distinct prime numbers

The prime factorization of 81897946 is 2 × 37 × 13 × 85133. Since it has a total of 4 prime factors.

Most popular turbo-numbers

1, 2, 44, 20, 130, 806, 4938, 5390, 13932, 2627, 689213, 757223, 7620574, 475290, 95409571, 1153611, 945786307, 479219708, 8880747393, 3847821163

Basic calculations (n = 81897946)

Multiplication

n×y
n×2 163795892
n×3 245693838
n×4 327591784
n×5 409489730

Division

n÷y
n÷2 40948973
n÷3 27299315.333333
n÷3 20474486.5
n÷5 16379589.2

Exponentiation

ny
n2 6707273559018916
n3 5.4931192774376E+23
n4 4.4987518595514E+31
n5 3.6843853686094E+39

Nth Root

y√n
2√n 9049.7483942925
3√n 434.26784135117
4√n 95.130165532772
5√n 38.252040062926

Divisors of 81897946

1, 2, 13, 26, 37, 74, 481, 962, 85133, 170266, 1106729, 2213458, 3149921, 6299842, 40948973, 81897946

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 -81897945
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 81897946 can be divided by 16 positive divisors. The sum of these divisors (counting 81897946) is 1, the average is 0.0625.

Base conversion 81897946

Base System Value
2 Binary 100111000011010100111011010
3 Ternary 12201002211212021
4 Quaternary 10320122213122
5 Quinary 131431213241
6 Senary 12043205054
8 Octal 470324732
10 Decimal 81897946
12 Duodecimal 2351678a
16 Hexadecimal 4e1a9da
20 Vigesimal 15bh4h6
36 Base36 1crcuy

Cryptographic Hash Functions

md5 e94bded43ffddb1260dc1d9f45a3aad1
sha1 c7ee321cb964a499cde5b51a70755c49455bb461
sha256 1468a698516726117a13c22c5cd820d4bc65d0f3a0f503432dc5d2d186153aa1
sha512 6a741888f48c94d1cb8285075c318e1a650d16362d6f9940368c151e478260c352f9b5faf15ce0e2a3515d22dfb9ede5d9ad97934aba62f6677b6d95a9c7b7da
ripemd-160 565a1e2ad082e48bb936c46dde92c0b36dfbd18c

81897946 as geometric shapes

Circle

Radius = n
Diameter 163795892
Circumference 514579970.99539
Area 2.1071521338631E+16

Sphere

Radius = n
Volume 2.3009524223054E+24
Surface area 8.4286085354524E+16
Circumference 514579970.99539

Square

Length = n
Perimeter 327591784
Area 6707273559018916
Diagonal 115821185.9637

Cube

Length = n
Surface area 40243641354113496
Volume 5.4931192774376E+23
Space diagonal 141851403.50753

Equilateral Triangle

Length = n
Perimeter 245693838
Area 2.904334646121E+15
Altitude 70925701.753766

Triangular Pyramid

Length = n
Surface area 2.904334646121E+15
Volume 6.4737031515711E+22
Height 38607061.9879