21215 (number)

21215 is an odd 5-digits composite number following 21214 and preceding 21216. In scientific notation, it is written as 2.1215 × 10^4. The sum of its digits is 11. It has a total of 2 prime factors and 4 positive divisors. There are 16968 positive integers (up to 21215) that are relatively prime to 21215.

Interesting facts

Basic properties

Name

Name twenty-one thousand two hundred fifteen

Notation

Scientific notation 2.1215 × 10^4
Engineering notation 2.1215 × 10^3

Prime Factorization of 21215

Prime Factorization 5 × 4243

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 21215
Product of the distinct prime numbers

The prime factorization of 21215 is 5 × 4243. Since it has a total of 2 prime factors.

Most popular turbo-numbers

1, 4, 19, 5, 648, 593, 5062, 3992, 97996, 5009, 937113, 515299, 5984906, 5100170, 80676859, 40666347, 899344454, 903874474, 7525281828, 4835749094

Basic calculations (n = 21215)

Multiplication

n×y
n×2 42430
n×3 63645
n×4 84860
n×5 106075

Division

n÷y
n÷2 10607.5
n÷3 7071.6666666667
n÷3 5303.75
n÷5 4243

Exponentiation

ny
n2 450076225
n3 9548367113375
n4 202568608310250625
n5 4.297493025302E+21

Nth Root

y√n
2√n 145.65369888884
3√n 27.683076022217
4√n 12.068707424113
5√n 7.333792317835

Divisors of 21215

1, 5, 4243, 21215

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 -21214
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 21215 can be divided by 4 positive divisors. The sum of these divisors (counting 21215) is 1, the average is 0.25.

Base conversion 21215

Base System Value
2 Binary 101001011011111
3 Ternary 1002002202
4 Quaternary 11023133
5 Quinary 1134330
6 Senary 242115
8 Octal 51337
10 Decimal 21215
12 Duodecimal 1033b
16 Hexadecimal 52df
20 Vigesimal 2d0f
36 Base36 gdb

Cryptographic Hash Functions

md5 67e7cfd2e483fbbaaaa54b5523753e58
sha1 49a339d2d09802a9d7dabf2ebf547f65191c74bc
sha256 243116357dedb31ed4eb53c20d76d26d1353166e5521c67d8cedff85cba050f5
sha512 8a7c67aa0f2b0504828b61044048f9683e8e4df05114ff3aed860372c31695b2f4ecf93414f9bcb7373f0b62fd56c09b044f2e6046a08a0de301e8ce72e8352c
ripemd-160 8bb7d52f8db75fc1a7ef8697ee7c5d1aad0c5b45

21215 as geometric shapes

Circle

Radius = n
Diameter 42430
Circumference 133297.77629181
Area 1413956162.0154

Sphere

Radius = n
Volume 39996106636210
Surface area 5655824648.0617
Circumference 133297.77629181

Square

Length = n
Perimeter 84860
Area 450076225
Diagonal 30002.540725745

Cube

Length = n
Surface area 2700457350
Volume 9548367113375
Space diagonal 36745.457882574

Equilateral Triangle

Length = n
Perimeter 63645
Area 194888722.2447
Altitude 18372.728941287

Triangular Pyramid

Length = n
Surface area 194888722.2447
Volume 1125285855854.3
Height 10000.846908582