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

20128987 (number)

20128987 is an odd 8-digits composite number following 20128986 and preceding 20128988. In scientific notation, it is written as 2.0128987 × 10^7. The sum of its digits is 37. It has a total of 3 prime factors and 8 positive divisors. There are 19383840 positive integers (up to 20128987) that are relatively prime to 20128987.

Interesting facts

20128987 has 8 divisors, whose sum is 20877840
The reverse of 20128987 is 78982102
Previous prime number is 541

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 37
Digital Root 1

Name

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

Notation

Scientific notation	2.0128987 × 10^7
Engineering notation	2.0128987 × 10^6

Prime Factorization of 20128987

Prime Factorization 29 × 541 × 1283

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	20128987	Product of the distinct prime numbers

The prime factorization of 20128987 is 29 × 541 × 1283. Since it has a total of 3 prime factors.

Most popular turbo-numbers

1, 10, 73, 38, 367, 290, 9907, 4285, 45580, 96549, 71106, 456651, 4788552, 1078466, 1046403, 9344968, 733337209, 953747182, 5768532830, 8782997103

Basic calculations (n = 20128987)

Multiplication

n×y

n×2	40257974
n×3	60386961
n×4	80515948
n×5	100644935

Division

n÷y

n÷2	10064493.5
n÷3	6709662.3333333
n÷3	5032246.75
n÷5	4025797.4

Exponentiation

n^y

n²	405176117646169
n³	8.1557848048102E+21
n⁴	1.6416768631082E+29
n⁵	3.3045292235706E+36

Nth Root

^y√n

²√n	4486.5339628716
³√n	272.02405262357
⁴√n	66.98159420969
⁵√n	28.891120382037

Divisors of 20128987

1, 29, 541, 1283, 15689, 37207, 694103, 20128987

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	-20128986	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 20128987 can be divided by 8 positive divisors. The sum of these divisors (counting 20128987) is 1, the average is 0.125.

Base conversion 20128987

Base	System	Value
2	Binary	1001100110010010011011011
3	Ternary	1101212122210001
4	Quaternary	1030302103123
5	Quinary	20123111422
6	Senary	1555233431
8	Octal	114622333
10	Decimal	20128987
12	Duodecimal	68a8877
16	Hexadecimal	13324db
20	Vigesimal	65g297
36	Base36	bzfmj

Cryptographic Hash Functions

md5	38fc51a9fd0acc3f9ab321b227fc1389
sha1	d2a0772de6134a5c39a3da4807c8e50d0d467b70
sha256	15a67e0a9ab0d3aa404b34c21a10c4121eb547de35986d93e6da676c46f5d868
sha512	0ff205a79ad38e97e60dc8cc93b151bf0ec53375043d44efc7a095f2561e31563a7c24192b474ca7e94c0fa9d805255841267be46767d6f5e0f5aa24748c60a1
ripemd-160	32cc6e79fb70830074e6d188135ec6b2101586ff

20128987 as geometric shapes

Circle

Radius = n

Diameter	40257974
Circumference	126474155.36681
Area	1.2728983146072E+15

Sphere

Radius = n

Volume	3.4162871502735E+22
Surface area	5.091593258429E+15
Circumference	126474155.36681

Square

Length = n

Perimeter	80515948
Area	405176117646169
Diagonal	28466686.412232

Cube

Length = n

Surface area	2431056705877014
Volume	8.1557848048102E+21
Space diagonal	34864428.188893

Equilateral Triangle

Length = n

Perimeter	60386961
Area	1.7544640544417E+14
Altitude	17432214.094447

Triangular Pyramid

Length = n

Surface area	1.7544640544417E+14
Volume	9.6116845689658E+20
Height	9488895.4707439