218361981 (number)

218361981 is an odd 9-digits composite number following 218361980 and preceding 218361982. In scientific notation, it is written as 2.18361981 × 10^8. The sum of its digits is 39. It has a total of 2 prime factors and 4 positive divisors. There are 145574652 positive integers (up to 218361981) that are relatively prime to 218361981.

Interesting facts

Basic properties

Name

Name two hundred eighteen million three hundred sixty-one thousand nine hundred eighty-one

Notation

Scientific notation 2.18361981 × 10^8
Engineering notation 2.18361981 × 10^6

Prime Factorization of 218361981

Prime Factorization 3 × 72787327

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 218361981
Product of the distinct prime numbers

The prime factorization of 218361981 is 3 × 72787327. Since it has a total of 2 prime factors.

Most popular turbo-numbers

7, 8, 51, 42, 182, 312, 3681, 8900, 5056, 45562, 984577, 221654, 6047510, 3607903, 39516319, 9614176, 33302365, 802033830, 6670891339, 2600892301

Basic calculations (n = 218361981)

Multiplication

n×y
n×2 436723962
n×3 655085943
n×4 873447924
n×5 1091809905

Division

n÷y
n÷2 109180990.5
n÷3 72787327
n÷3 54590495.25
n÷5 43672396.2

Exponentiation

ny
n2 47681954746244361
n3 1.0411926096342E+25
n4 2.2735688084229E+33
n5 4.9646098894703E+41

Nth Root

y√n
2√n 14777.076199303
3√n 602.1790957663
4√n 121.56099785418
5√n 46.540967275448

Divisors of 218361981

1, 3, 72787327, 218361981

4 divisors

τ Total Divisors 4
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -218361980
Sum of the proper positive divisors of n
A Arithmetic Mean 0.25
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 4
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 218361981 can be divided by 4 positive divisors. The sum of these divisors (counting 218361981) is 1, the average is 0.25.

Base conversion 218361981

Base System Value
2 Binary 1101000000111111000001111101
3 Ternary 120012212221022210
4 Quaternary 31000333001331
5 Quinary 421400040411
6 Senary 33400131033
8 Octal 1500770175
10 Decimal 218361981
12 Duodecimal 61166a79
16 Hexadecimal d03f07d
20 Vigesimal 384f4j1
36 Base36 3m096l

Cryptographic Hash Functions

md5 87e567b1c43c102c4a80e7493a5fd6d1
sha1 2696472fcf6bd4d508fb2e75907cbd103e42e165
sha256 4926fa3e90fd1ecca5e14644cf563505f2265990158a6e6dfcc5bdb5ed65329e
sha512 86e231130e89dbf59d0c49580d92b9cb0cec2e01ea91210c1b5af4bdb9409f34e968aa17153267cd73ce455b644cf5ac713714125fab6fc4438cae1804418680
ripemd-160 eeeb620094080dfd18bbaa3ffc065959b0c81376

218361981 as geometric shapes

Circle

Radius = n
Diameter 436723962
Circumference 1372008790.6658
Area 1.497972787396E+17

Sphere

Radius = n
Volume 4.3613374045318E+25
Surface area 5.9918911495841E+17
Circumference 1372008790.6658

Square

Length = n
Perimeter 873447924
Area 47681954746244361
Diagonal 308810475.03686

Cube

Length = n
Surface area 286091728477466166
Volume 1.0411926096342E+25
Space diagonal 378214045.53339

Equilateral Triangle

Length = n
Perimeter 655085943
Area 2.0646892056174E+16
Altitude 189107022.76669

Triangular Pyramid

Length = n
Surface area 2.0646892056174E+16
Volume 1.2270572579895E+24
Height 102936825.01229