30981 (number)

30981 is an odd 5-digits composite number following 30980 and preceding 30982. In scientific notation, it is written as 3.0981 × 10^4. The sum of its digits is 21. It has a total of 3 prime factors and 8 positive divisors. There are 19712 positive integers (up to 30981) that are relatively prime to 30981.

Interesting facts

Basic properties

Name

Name thirty thousand nine hundred eighty-one

Notation

Scientific notation 3.0981 × 10^4
Engineering notation 3.0981 × 10^3

Prime Factorization of 30981

Prime Factorization 3 × 23 × 449

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 30981
Product of the distinct prime numbers

The prime factorization of 30981 is 3 × 23 × 449. Since it has a total of 3 prime factors.

Most popular turbo-numbers

10, 10, 51, 93, 25, 820, 9298, 1083, 13963, 31289, 476661, 206589, 5567661, 6028078, 38743183, 15242640, 746167252, 205456992, 9431888815, 4207737306

Basic calculations (n = 30981)

Multiplication

n×y
n×2 61962
n×3 92943
n×4 123924
n×5 154905

Division

n÷y
n÷2 15490.5
n÷3 10327
n÷3 7745.25
n÷5 6196.2

Exponentiation

ny
n2 959822361
n3 29736256566141
n4 921258964675614321
n5 2.8541523984615E+22

Nth Root

y√n
2√n 176.01420397229
3√n 31.407387337838
4√n 13.267034482969
5√n 7.9107759828648

Divisors of 30981

1, 3, 23, 69, 449, 1347, 10327, 30981

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 -30980
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 30981 can be divided by 8 positive divisors. The sum of these divisors (counting 30981) is 1, the average is 0.125.

Base conversion 30981

Base System Value
2 Binary 111100100000101
3 Ternary 1120111110
4 Quaternary 13210011
5 Quinary 1442411
6 Senary 355233
8 Octal 74405
10 Decimal 30981
12 Duodecimal 15b19
16 Hexadecimal 7905
20 Vigesimal 3h91
36 Base36 nwl

Cryptographic Hash Functions

md5 3d2515739e79e2d0700e7b6b75f6b2a1
sha1 28108db1205f00fe8d5b0d61a41da4b278a19fc8
sha256 a4e67eb0a81c90a685825b12893d972ba73c16f1c299de9322312b2f5e2c0fc3
sha512 fe11bf9032dfb140c63ca5c3981a4563d260b7cd80ea78fc7fc5a48ce4af7ecb8ebd17e807fc42d390b004af9bae10252c31c0f0de8048d576e1939ec04b0988
ripemd-160 d61f76fe230690828f79d04901a6c59c95f36e82

30981 as geometric shapes

Circle

Radius = n
Diameter 61962
Circumference 194659.36400173
Area 3015370878.0688

Sphere

Radius = n
Volume 1.2455894023127E+14
Surface area 12061483512.275
Circumference 194659.36400173

Square

Length = n
Perimeter 123924
Area 959822361
Diagonal 43813.750375881

Cube

Length = n
Surface area 5758934166
Volume 29736256566141
Space diagonal 53660.666069291

Equilateral Triangle

Length = n
Perimeter 92943
Area 415615273.87318
Altitude 26830.333034646

Triangular Pyramid

Length = n
Surface area 415615273.87318
Volume 3504451444170.2
Height 14604.583458627