215681221 (number)

215681221 is an odd 9-digits composite number following 215681220 and preceding 215681222. In scientific notation, it is written as 2.15681221 × 10^8. The sum of its digits is 28. It has a total of 3 prime factors and 8 positive divisors. There are 181381200 positive integers (up to 215681221) that are relatively prime to 215681221.

Interesting facts

Basic properties

Name

Name two hundred fifteen million six hundred eighty-one thousand two hundred twenty-one

Notation

Scientific notation 2.15681221 × 10^8
Engineering notation 2.15681221 × 10^6

Prime Factorization of 215681221

Prime Factorization 7 × 53 × 581351

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 215681221
Product of the distinct prime numbers

The prime factorization of 215681221 is 7 × 53 × 581351. Since it has a total of 3 prime factors.

Most popular turbo-numbers

9, 6, 77, 78, 576, 645, 3300, 9436, 77259, 99376, 261811, 383902, 8506127, 8847427, 68369737, 7035687, 780796583, 169273859, 3849230314, 4114712523

Basic calculations (n = 215681221)

Multiplication

n×y
n×2 431362442
n×3 647043663
n×4 862724884
n×5 1078406105

Division

n÷y
n÷2 107840610.5
n÷3 71893740.333333
n÷3 53920305.25
n÷5 43136244.2

Exponentiation

ny
n2 46518389092050841
n3 1.0033142958327E+25
n4 2.1639605237194E+33
n5 4.6672564795161E+41

Nth Root

y√n
2√n 14686.089370557
3√n 599.7046889354
4√n 121.18617648295
5√n 46.42612824003

Divisors of 215681221

1, 7, 53, 371, 581351, 4069457, 30811603, 215681221

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 -215681220
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 215681221 can be divided by 8 positive divisors. The sum of these divisors (counting 215681221) is 1, the average is 0.125.

Base conversion 215681221

Base System Value
2 Binary 1100110110110000100011000101
3 Ternary 120000211202000101
4 Quaternary 30312300203011
5 Quinary 420203244341
6 Senary 33222444101
8 Octal 1466604305
10 Decimal 215681221
12 Duodecimal 60293631
16 Hexadecimal cdb08c5
20 Vigesimal 3780311
36 Base36 3kesp1

Cryptographic Hash Functions

md5 4a06429008258e9cc94f6e502ab19b17
sha1 4f6571a7b21236af9523aa50b20b025c2919ffd2
sha256 aa9e6d32191b1d0db57397a7c1fcd03c557c19aac9ca664c85758a14f1860822
sha512 89843f320a1624651e4245bebaa9c4df26b444496ee9d269e7c39c689f3bdaa8b78df45dac173657ad9d8da7734971943839b8e34e941d3ad24219f4d7988592
ripemd-160 3df6c5e5d876841356affbbeada63d768ceae208

215681221 as geometric shapes

Circle

Radius = n
Diameter 431362442
Circumference 1355165078.8218
Area 1.4614182942842E+17

Sphere

Radius = n
Volume 4.202673094706E+25
Surface area 5.8456731771367E+17
Circumference 1355165078.8218

Square

Length = n
Perimeter 862724884
Area 46518389092050841
Diagonal 305019307.88739

Cube

Length = n
Surface area 279110334552305046
Volume 1.0033142958327E+25
Space diagonal 373570833.01049

Equilateral Triangle

Length = n
Perimeter 647043663
Area 2.0143053348422E+16
Altitude 186785416.50525

Triangular Pyramid

Length = n
Surface area 2.0143053348422E+16
Volume 1.1824172370745E+24
Height 101673102.62913