816809721 (number)

816809721 is an odd 9-digits composite number following 816809720 and preceding 816809722. In scientific notation, it is written as 8.16809721 × 10^8. The sum of its digits is 42. It has a total of 5 prime factors and 32 positive divisors. There are 429560064 positive integers (up to 816809721) that are relatively prime to 816809721.

Interesting facts

Basic properties

Name

Name eight hundred sixteen million eight hundred nine thousand seven hundred twenty-one

Notation

Scientific notation 8.16809721 × 10^8
Engineering notation 8.16809721 × 10^6

Prime Factorization of 816809721

Prime Factorization 3 × 7 × 13 × 349 × 8573

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 816809721
Product of the distinct prime numbers

The prime factorization of 816809721 is 3 × 7 × 13 × 349 × 8573. Since it has a total of 5 prime factors.

Most popular turbo-numbers

Basic calculations (n = 816809721)

Multiplication

n×y
n×2 1633619442
n×3 2450429163
n×4 3267238884
n×5 4084048605

Division

n÷y
n÷2 408404860.5
n÷3 272269907
n÷3 204202430.25
n÷5 163361944.2

Exponentiation

ny
n2 667178120320097841
n3 5.4495757431596E+26
n4 4.4512664423386E+35
n5 3.6358377008632E+44

Nth Root

y√n
2√n 28579.883152315
3√n 934.77473521267
4√n 169.0558580834
5√n 60.593240576567

Divisors of 816809721

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 -816809720
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 816809721 can be divided by 32 positive divisors. The sum of these divisors (counting 816809721) is 1, the average is 0.03125.

Base conversion 816809721

Base System Value
2 Binary 110000101011111000011011111001
3 Ternary 2002220222020021220
4 Quaternary 300223320123321
5 Quinary 3133100402341
6 Senary 213015022253
8 Octal 6053703371
10 Decimal 816809721
12 Duodecimal 1a966a989
16 Hexadecimal 30af86f9
20 Vigesimal cf51461
36 Base36 dib2ex

Cryptographic Hash Functions

md5 72f416e6a02897831427af21c67bb021
sha1 18d1c9cd1c2781f51905b11ee38c881b91764f0d
sha256 6709ba2f8f888a87c0b4be3361ae6f30b27ba2abaaa4dd7e18ae6df6a4213d35
sha512 509d9224b6e3c4baa083465cf5398eb0b7bdede2f7b54694096bea5f469ae085bcbaf75fa68f7a7f0822c85806ca73a1a0e479c01a5f4860bc2ab0242dcd6250
ripemd-160 1da7f1a2b2fcd9cc6a601ab271ef84653a0dee12

816809721 as geometric shapes

Circle

Radius = n
Diameter 1633619442
Circumference 5132166837.7487
Area 2.0960018814335E+18

Sphere

Radius = n
Volume 2.2827129493189E+27
Surface area 8.3840075257339E+18
Circumference 5132166837.7487

Square

Length = n
Perimeter 3267238884
Area 667178120320097841
Diagonal 1155143385.3164

Cube

Length = n
Surface area 4003068721920587046
Volume 5.4495757431596E+26
Space diagonal 1414755936.8882

Equilateral Triangle

Length = n
Perimeter 2450429163
Area 2.8889660052318E+17
Altitude 707377968.44408

Triangular Pyramid

Length = n
Surface area 2.8889660052318E+17
Volume 6.4223866042965E+25
Height 385047795.10546