81776721 (number)

81776721 is an odd 8-digits composite number following 81776720 and preceding 81776722. In scientific notation, it is written as 8.1776721 × 10^7. The sum of its digits is 39. It has a total of 4 prime factors and 16 positive divisors. There are 49373376 positive integers (up to 81776721) that are relatively prime to 81776721.

Interesting facts

Basic properties

Name

Name eighty-one million seven hundred seventy-six thousand seven hundred twenty-one

Notation

Scientific notation 8.1776721 × 10^7
Engineering notation 8.1776721 × 10^6

Prime Factorization of 81776721

Prime Factorization 3 × 13 × 53 × 39563

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81776721
Product of the distinct prime numbers

The prime factorization of 81776721 is 3 × 13 × 53 × 39563. Since it has a total of 4 prime factors.

Most popular turbo-numbers

6, 5, 90, 19, 915, 863, 7493, 8136, 39021, 61236, 695164, 415284, 9733130, 3691889, 27377515, 80836113, 608418349, 116702768, 2244151530, 9641766330

Basic calculations (n = 81776721)

Multiplication

n×y
n×2 163553442
n×3 245330163
n×4 327106884
n×5 408883605

Division

n÷y
n÷2 40888360.5
n÷3 27258907
n÷3 20444180.25
n÷5 16355344.2

Exponentiation

ny
n2 6687432097511841
n3 5.4687626884467E+23
n4 4.4721748058832E+31
n5 3.6571979136394E+39

Nth Root

y√n
2√n 9043.0482139597
3√n 434.05346839248
4√n 95.094943156614
5√n 38.240709249999

Divisors of 81776721

1, 3, 13, 39, 53, 159, 689, 2067, 39563, 118689, 514319, 1542957, 2096839, 6290517, 27258907, 81776721

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 -81776720
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 81776721 can be divided by 16 positive divisors. The sum of these divisors (counting 81776721) is 1, the average is 0.0625.

Base conversion 81776721

Base System Value
2 Binary 100110111111101000001010001
3 Ternary 12200212200120110
4 Quaternary 10313331001101
5 Quinary 131413323341
6 Senary 12040431533
8 Octal 467750121
10 Decimal 81776721
12 Duodecimal 234785a9
16 Hexadecimal 4dfd051
20 Vigesimal 15b21g1
36 Base36 1corbl

Cryptographic Hash Functions

md5 61c70f76e8eb5b182fdec5dbd40f1abe
sha1 ee1041f496f56fee3f682242e82ec91f39f8f7b8
sha256 a2778ef0b0ac2edeafdb57eb85f5f685b81bd5539a4caa563bc4060f283acc1c
sha512 071c8d90c0dc7df7641fc39405f7f56174cf18a31e05bb88978b30a96cd6710fce76d787086e2c6f5892a6b33164e7f5b0e690b259d329675853deb97bed93aa
ripemd-160 d69b78ecac58000385e18c52b3ae1f3e310b9b17

81776721 as geometric shapes

Circle

Radius = n
Diameter 163553442
Circumference 513818291.85652
Area 2.1009187548924E+16

Sphere

Radius = n
Volume 2.2907499581667E+24
Surface area 8.4036750195695E+16
Circumference 513818291.85652

Square

Length = n
Perimeter 327106884
Area 6687432097511841
Diagonal 115649747.9246

Cube

Length = n
Surface area 40124592585071046
Volume 5.4687626884467E+23
Space diagonal 141641435.64838

Equilateral Triangle

Length = n
Perimeter 245330163
Area 2.8957430412644E+15
Altitude 70820717.824192

Triangular Pyramid

Length = n
Surface area 2.8957430412644E+15
Volume 6.4449986361677E+22
Height 38549915.974867