21090945 (number)

21090945 is an odd 8-digits composite number following 21090944 and preceding 21090946. In scientific notation, it is written as 2.1090945 × 10^7. The sum of its digits is 30. It has a total of 4 prime factors and 16 positive divisors. There are 11204544 positive integers (up to 21090945) that are relatively prime to 21090945.

Interesting facts

Basic properties

Name

Name twenty-one million ninety thousand nine hundred forty-five

Notation

Scientific notation 2.1090945 × 10^7
Engineering notation 2.1090945 × 10^6

Prime Factorization of 21090945

Prime Factorization 3 × 5 × 269 × 5227

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21090945
Product of the distinct prime numbers

The prime factorization of 21090945 is 3 × 5 × 269 × 5227. Since it has a total of 4 prime factors.

Most popular turbo-numbers

4, 6, 48, 17, 51, 899, 997, 8951, 98915, 92095, 587959, 322312, 9841873, 505732, 3657516, 87385296, 919291310, 292638598, 8341872714, 3987778999

Basic calculations (n = 21090945)

Multiplication

n×y
n×2 42181890
n×3 63272835
n×4 84363780
n×5 105454725

Division

n÷y
n÷2 10545472.5
n÷3 7030315
n÷3 5272736.25
n÷5 4218189

Exponentiation

ny
n2 444827960993025
n3 9.381842059766E+21
n4 1.9787191488121E+29
n5 4.1733056738043E+36

Nth Root

y√n
2√n 4592.4878878447
3√n 276.29011449706
4√n 67.767897177385
5√n 29.162127729528

Divisors of 21090945

1, 3, 5, 15, 269, 807, 1345, 4035, 5227, 15681, 26135, 78405, 1406063, 4218189, 7030315, 21090945

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21090944
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21090945 can be divided by 16 positive divisors. The sum of these divisors (counting 21090945) is 1, the average is 0.0625.

Base conversion 21090945

Base System Value
2 Binary 1010000011101001010000001
3 Ternary 1110200112100010
4 Quaternary 1100131022001
5 Quinary 20344402240
6 Senary 2032015133
8 Octal 120351201
10 Decimal 21090945
12 Duodecimal 70914a9
16 Hexadecimal 141d281
20 Vigesimal 6bg775
36 Base36 ck1vl

Cryptographic Hash Functions

md5 0f69edcfe3d04ffc7d9390bd367000a6
sha1 69704a00e619008d2be718952dc0d9fa19b94544
sha256 4571ca8f600cce9368ef82af228678cbffd3145ae6b0a3c3b2ce9d02d35ceefe
sha512 cdd46e3f4ae83b7250e967fe7b516b5777f32bf871fe0ee402a3a5f13f633486136809710e5b8b0d2b3360318e1fe9b753bcd2da80cbc8e07586ca9f310debd8
ripemd-160 6583d231d86c8f3a6065fab3edcffe554723ce7d

21090945 as geometric shapes

Circle

Radius = n
Diameter 42181890
Circumference 132518315.73853
Area 1.397468254367E+15

Sphere

Radius = n
Volume 3.9298568122801E+22
Surface area 5.5898730174681E+15
Circumference 132518315.73853

Square

Length = n
Perimeter 84363780
Area 444827960993025
Diagonal 29827100.462265

Cube

Length = n
Surface area 2668967765958150
Volume 9.381842059766E+21
Space diagonal 36530588.319641

Equilateral Triangle

Length = n
Perimeter 63272835
Area 1.926161572668E+14
Altitude 18265294.15982

Triangular Pyramid

Length = n
Surface area 1.926161572668E+14
Volume 1.1056606900803E+21
Height 9942366.820755