20921865 (number)

20921865 is an odd 8-digits composite number following 20921864 and preceding 20921866. In scientific notation, it is written as 2.0921865 × 10^7. The sum of its digits is 33. It has a total of 5 prime factors and 32 positive divisors. There are 10777536 positive integers (up to 20921865) that are relatively prime to 20921865.

Interesting facts

Basic properties

Name

Name twenty million nine hundred twenty-one thousand eight hundred sixty-five

Notation

Scientific notation 2.0921865 × 10^7
Engineering notation 2.0921865 × 10^6

Prime Factorization of 20921865

Prime Factorization 3 × 5 × 163 × 43 × 199

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 20921865
Product of the distinct prime numbers

The prime factorization of 20921865 is 3 × 5 × 163 × 43 × 199. Since it has a total of 5 prime factors.

Most popular turbo-numbers

1, 8, 61, 46, 886, 740, 72, 203, 62356, 12718, 271627, 145689, 9852607, 2485632, 88009320, 46966061, 441383288, 993588316, 1120005286, 879549598

Basic calculations (n = 20921865)

Multiplication

n×y
n×2 41843730
n×3 62765595
n×4 83687460
n×5 104609325

Division

n÷y
n÷2 10460932.5
n÷3 6973955
n÷3 5230466.25
n÷5 4184373

Exponentiation

ny
n2 437724435078225
n3 9.1580115379079E+21
n4 1.9160268106455E+29
n5 4.0086854268706E+36

Nth Root

y√n
2√n 4574.0425227582
3√n 275.54982009707
4√n 67.631668046546
5√n 29.115220202711

Divisors of 20921865

1, 3, 5, 15, 43, 129, 163, 199, 215, 489, 597, 645, 815, 995, 2445, 2985, 7009, 8557, 21027, 25671, 32437, 35045, 42785, 97311, 105135, 128355, 162185, 486555, 1394791, 4184373, 6973955, 20921865

32 divisors

τ Total Divisors 32
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -20921864
Sum of the proper positive divisors of n
A Arithmetic Mean 0.03125
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 32
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20921865 can be divided by 32 positive divisors. The sum of these divisors (counting 20921865) is 1, the average is 0.03125.

Base conversion 20921865

Base System Value
2 Binary 1001111110011111000001001
3 Ternary 1110100221101220
4 Quaternary 1033303320021
5 Quinary 20323444430
6 Senary 2024232253
8 Octal 117637011
10 Decimal 20921865
12 Duodecimal 700b689
16 Hexadecimal 13f3e09
20 Vigesimal 6af4d5
36 Base36 cgfex

Cryptographic Hash Functions

md5 fa1a3f177e2c7bac2860e6f7e94c76a2
sha1 8203fce8fd38aa22ab01caa4fc1405a7c4c565da
sha256 aeb09513ae704a5e22da27325ae0dc08165fc8caa3cf5eda5f5f191e16cdf106
sha512 e7ba7288237b24b388bbd6860dc0118795a364fdd9e9889af7147f15f62b107de2156d604d6f77bc321755ec21bbac3be232cc31c1a259b0859d6d154e2ba7c6
ripemd-160 76f4fd6d0a520d36b3ce64a3b1e63ce8f79d8efb

20921865 as geometric shapes

Circle

Radius = n
Diameter 41843730
Circumference 131455954.76679
Area 1.3751518695385E+15

Sphere

Radius = n
Volume 3.8360989025309E+22
Surface area 5.500607478154E+15
Circumference 131455954.76679

Square

Length = n
Perimeter 83687460
Area 437724435078225
Diagonal 29587985.233139

Cube

Length = n
Surface area 2626346610469350
Volume 9.1580115379079E+21
Space diagonal 36237733.169097

Equilateral Triangle

Length = n
Perimeter 62765595
Area 1.8954024031747E+14
Altitude 18118866.584549

Triangular Pyramid

Length = n
Surface area 1.8954024031747E+14
Volume 1.0792820101066E+21
Height 9862661.7443797