81488897 (number)

81488897 is an odd 8-digits composite number following 81488896 and preceding 81488898. In scientific notation, it is written as 8.1488897 × 10^7. The sum of its digits is 53. It has a total of 3 prime factors and 8 positive divisors. There are 69802272 positive integers (up to 81488897) that are relatively prime to 81488897.

Interesting facts

Basic properties

Name

Name eighty-one million four hundred eighty-eight thousand eight hundred ninety-seven

Notation

Scientific notation 8.1488897 × 10^7
Engineering notation 8.1488897 × 10^6

Prime Factorization of 81488897

Prime Factorization 7 × 2153 × 5407

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 81488897
Product of the distinct prime numbers

The prime factorization of 81488897 is 7 × 2153 × 5407. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81488897)

Multiplication

n×y
n×2 162977794
n×3 244466691
n×4 325955588
n×5 407444485

Division

n÷y
n÷2 40744448.5
n÷3 27162965.666667
n÷3 20372224.25
n÷5 16297779.4

Exponentiation

ny
n2 6640440334276609
n3 5.4112215843451E+23
n4 4.4095447833088E+31
n5 3.5932894066394E+39

Nth Root

y√n
2√n 9027.1200833932
3√n 433.54363355752
4√n 95.011157678418
5√n 38.213752624117

Divisors of 81488897

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81488896
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
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 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81488897 can be divided by 8 positive divisors. The sum of these divisors (counting 81488897) is 1, the average is 0.125.

Base conversion 81488897

Base System Value
2 Binary 100110110110110110000000001
3 Ternary 12200100001202022
4 Quaternary 10312312300001
5 Quinary 131330121042
6 Senary 12030331225
8 Octal 466666001
10 Decimal 81488897
12 Duodecimal 23359b15
16 Hexadecimal 4db6c01
20 Vigesimal 159624h
36 Base36 1cil8h

Cryptographic Hash Functions

md5 799c9b6fd99e415e8c8cdcadbe26f8e0
sha1 b93ed8c2edd1f46d41a5f49ec6444fe54668a540
sha256 e378d8672f0a6b6ece823c26d70490f3bc7eccede6fd5a4de2a27221e5bbcf97
sha512 37b20c841a9b55f57b3e312eac9b676854ed3e6dcfad53b0ec37a801b40d51e6936ad104847140b05f075a836ef8f828ffa79c6d147366e573a50a3069a13422
ripemd-160 c1a2cbe99be1b1c3898e4658112b277e1cc4519a

81488897 as geometric shapes

Circle

Radius = n
Diameter 162977794
Circumference 512009840.32867
Area 2.0861558570765E+16

Sphere

Radius = n
Volume 2.2666471968434E+24
Surface area 8.3446234283059E+16
Circumference 512009840.32867

Square

Length = n
Perimeter 325955588
Area 6640440334276609
Diagonal 115242703.32022

Cube

Length = n
Surface area 39842642005659654
Volume 5.4112215843451E+23
Space diagonal 141142909.85675

Equilateral Triangle

Length = n
Perimeter 244466691
Area 2.8753950108992E+15
Altitude 70571454.928374

Triangular Pyramid

Length = n
Surface area 2.8753950108992E+15
Volume 6.3771857946557E+22
Height 38414234.440075