Max	9223372036854775807
25835	Positive integer
0b10001100	Binary number
01771452	Octal number
0x129abf	Hex number
5.012 * 10^7	Scientific notation
2^4 * 5	Factorized form
*	Random number

20121561 (number)

20121561 is an odd 8-digits composite number following 20121560 and preceding 20121562. In scientific notation, it is written as 2.0121561 × 10^7. The sum of its digits is 18. It has a total of 3 prime factors and 8 positive divisors. There are 13414356 positive integers (up to 20121561) that are relatively prime to 20121561.

Interesting facts

20121561 has 8 divisors, whose sum is 29809760
The reverse of 20121561 is 16512102
Previous prime number is 3

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 18
Digital Root 9

Name

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

Notation

Scientific notation	2.0121561 × 10^7
Engineering notation	2.0121561 × 10^6

Prime Factorization of 20121561

Prime Factorization 9 × 3 × 745243

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	20121561	Product of the distinct prime numbers

The prime factorization of 20121561 is 9 × 3 × 745243. Since it has a total of 3 prime factors.

Most popular turbo-numbers

9, 7, 57, 10, 683, 661, 3669, 3199, 86783, 93895, 659742, 365977, 8770456, 1255875, 75713240, 97712837, 744285053, 370412492, 8993872149, 569252937

Basic calculations (n = 20121561)

Multiplication

n×y

n×2	40243122
n×3	60364683
n×4	80486244
n×5	100607805

Division

n÷y

n÷2	10060780.5
n÷3	6707187
n÷3	5030390.25
n÷5	4024312.2

Exponentiation

n^y

n²	404877217076721
n³	8.1467616209195E+21
n⁴	1.6392556090779E+29
n⁵	3.2984381732653E+36

Nth Root

^y√n

²√n	4485.706298901
³√n	271.99059674096
⁴√n	66.97541563067
⁵√n	28.888988360916

Divisors of 20121561

1, 3, 9, 27, 745243, 2235729, 6707187, 20121561

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	-20121560	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 20121561 can be divided by 8 positive divisors. The sum of these divisors (counting 20121561) is 1, the average is 0.125.

Base conversion 20121561

Base	System	Value
2	Binary	1001100110000011111011001
3	Ternary	1101212021121000
4	Quaternary	1030300133121
5	Quinary	20122342221
6	Senary	1555135213
8	Octal	114603731
10	Decimal	20121561
12	Duodecimal	68a4509
16	Hexadecimal	13307d9
20	Vigesimal	65f3i1
36	Base36	bz9w9

Cryptographic Hash Functions

md5	91ea646050366678fc44a9a154ea61cb
sha1	af86b0c64194e353d68550dda2b5599ef09d76d3
sha256	78513069be785f40590d782128b5ac87f50ed81cb7e755391298b4ac36257944
sha512	9bb2736a96c9556202360d8355470dc07d222d69afcecd0bd69c445c132970d1e627024ba245a3a672c262aa4cafccfe100b764338895ffc39f7721404dd4184
ripemd-160	0ff042bb7adcaacd69c1ebb1cbc076fa6219e71c

20121561 as geometric shapes

Circle

Radius = n

Diameter	40243122
Circumference	126427496.43272
Area	1.2719592907741E+15

Sphere

Radius = n

Volume	3.4125075278437E+22
Surface area	5.0878371630964E+15
Circumference	126427496.43272

Square

Length = n

Perimeter	80486244
Area	404877217076721
Diagonal	28456184.462318

Cube

Length = n

Surface area	2429263302460326
Volume	8.1467616209195E+21
Space diagonal	34851565.979596

Equilateral Triangle

Length = n

Perimeter	60364683
Area	1.7531697770099E+14
Altitude	17425782.989798

Triangular Pyramid

Length = n

Surface area	1.7531697770099E+14
Volume	9.6010506447708E+20
Height	9485394.8207725