20921787 (number)

20921787 is an odd 8-digits composite number following 20921786 and preceding 20921788. In scientific notation, it is written as 2.0921787 × 10^7. The sum of its digits is 36. It has a total of 4 prime factors and 16 positive divisors. There are 13817952 positive integers (up to 20921787) that are relatively prime to 20921787.

Interesting facts

Basic properties

Name

Name twenty million nine hundred twenty-one thousand seven hundred eighty-seven

Notation

Scientific notation 2.0921787 × 10^7
Engineering notation 2.0921787 × 10^6

Prime Factorization of 20921787

Prime Factorization 3 × 9 × 109 × 7109

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 20921787
Product of the distinct prime numbers

The prime factorization of 20921787 is 3 × 9 × 109 × 7109. Since it has a total of 4 prime factors.

Most popular turbo-numbers

10, 5, 19, 7, 209, 354, 6114, 9937, 89380, 95566, 898296, 670165, 1066341, 7138771, 86303056, 74548119, 251887688, 773670028, 1535576191, 7980882894

Basic calculations (n = 20921787)

Multiplication

n×y
n×2 41843574
n×3 62765361
n×4 83687148
n×5 104608935

Division

n÷y
n÷2 10460893.5
n÷3 6973929
n÷3 5230446.75
n÷5 4184357.4

Exponentiation

ny
n2 437721171273369
n3 9.1579091107719E+21
n4 1.9159982378093E+29
n5 4.0086107023822E+36

Nth Root

y√n
2√n 4574.0339963756
3√n 275.54947766564
4√n 67.631605011087
5√n 29.115198493456

Divisors of 20921787

1, 3, 9, 27, 109, 327, 981, 2943, 7109, 21327, 63981, 191943, 774881, 2324643, 6973929, 20921787

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 -20921786
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 20921787 can be divided by 16 positive divisors. The sum of these divisors (counting 20921787) is 1, the average is 0.0625.

Base conversion 20921787

Base System Value
2 Binary 1001111110011110110111011
3 Ternary 1110100221022000
4 Quaternary 1033303312323
5 Quinary 20323444122
6 Senary 2024232043
8 Octal 117636673
10 Decimal 20921787
12 Duodecimal 700b623
16 Hexadecimal 13f3dbb
20 Vigesimal 6af497
36 Base36 cgfcr

Cryptographic Hash Functions

md5 aff911fb00e6934121b7ea5b4a0faa7d
sha1 b9bfbcc8fbcbd98a2bda14f902747011a9557b3f
sha256 e935077d42af5689fc63bdfda95a9679eaf91d325b2f4be7e114667bd638d151
sha512 7e9278912ec5ad6f0d6186486750d5cdc6d7ba156b38a87b54ec88aed28e875a6cf94639108b52bb47b895d8b35a34aeeaefc8b34284c32969318f24e6150ea4
ripemd-160 52b444ce0da011e26ba53c0666883e07fe97ae6d

20921787 as geometric shapes

Circle

Radius = n
Diameter 41843574
Circumference 131455464.67834
Area 1.3751416159931E+15

Sphere

Radius = n
Volume 3.8360559979526E+22
Surface area 5.5005664639725E+15
Circumference 131455464.67834

Square

Length = n
Perimeter 83687148
Area 437721171273369
Diagonal 29587874.924481

Cube

Length = n
Surface area 2626327027640214
Volume 9.1579091107719E+21
Space diagonal 36237598.069134

Equilateral Triangle

Length = n
Perimeter 62765361
Area 1.8953882704851E+14
Altitude 18118799.034567

Triangular Pyramid

Length = n
Surface area 1.8953882704851E+14
Volume 1.0792699389528E+21
Height 9862624.974827