129216981 (number)

129216981 is an odd 9-digits composite number following 129216980 and preceding 129216982. In scientific notation, it is written as 1.29216981 × 10^8. The sum of its digits is 39. It has a total of 3 prime factors and 8 positive divisors. There are 86116400 positive integers (up to 129216981) that are relatively prime to 129216981.

Interesting facts

Basic properties

Name

Name one hundred twenty-nine million two hundred sixteen thousand nine hundred eighty-one

Notation

Scientific notation 1.29216981 × 10^8
Engineering notation 1.29216981 × 10^6

Prime Factorization of 129216981

Prime Factorization 3 × 4451 × 9677

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 129216981
Product of the distinct prime numbers

The prime factorization of 129216981 is 3 × 4451 × 9677. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 129216981)

Multiplication

n×y
n×2 258433962
n×3 387650943
n×4 516867924
n×5 646084905

Division

n÷y
n÷2 64608490.5
n÷3 43072327
n÷3 32304245.25
n÷5 25843396.2

Exponentiation

ny
n2 16697028178754361
n3 2.1575395729306E+24
n4 2.7879075000212E+32
n5 3.6024499045999E+40

Nth Root

y√n
2√n 11367.364734185
3√n 505.56057216417
4√n 106.61784435162
5√n 41.90481406634

Divisors of 129216981

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 -129216980
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 129216981 can be divided by 8 positive divisors. The sum of these divisors (counting 129216981) is 1, the average is 0.125.

Base conversion 129216981

Base System Value
2 Binary 111101100111011000111010101
3 Ternary 100000010220101010
4 Quaternary 13230323013111
5 Quinary 231034420411
6 Senary 20453322433
8 Octal 754730725
10 Decimal 129216981
12 Duodecimal 37336419
16 Hexadecimal 7b3b1d5
20 Vigesimal 207c291
36 Base36 24xkgl

Cryptographic Hash Functions

md5 dc92779ebdad83ce7bb2317057ee8256
sha1 93bd09ad41fa54b587a06ec1b32219380db0a114
sha256 9c5b7f12987c15ae914bf926754448e6e0835d7b7e73949914469825bca394bc
sha512 e01d4ea8ac55298343a8977414d61c814296f0b0425081f97ac99d98691ca8002513ac896e363c61b2df444bd1b0979c66b05f68f304ef713957b5e69518c28d
ripemd-160 79a7a883b22ec466c86fae8a0e4dbea663672d7e

129216981 as geometric shapes

Circle

Radius = n
Diameter 258433962
Circumference 811894236.4573
Area 5.2455261063156E+16

Sphere

Radius = n
Volume 9.0374806295306E+24
Surface area 2.0982104425263E+17
Circumference 811894236.4573

Square

Length = n
Perimeter 516867924
Area 16697028178754361
Diagonal 182740407.01911

Cube

Length = n
Surface area 100182169072526166
Volume 2.1575395729306E+24
Space diagonal 223810376.29266

Equilateral Triangle

Length = n
Perimeter 387650943
Area 7.2300252852529E+15
Altitude 111905188.14633

Triangular Pyramid

Length = n
Surface area 7.2300252852529E+15
Volume 2.5426847711626E+23
Height 60913469.006369