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

128021287 (number)

128021287 is an odd 9-digits prime number following 128021286 and preceding 128021288. In scientific notation, it is written as 1.28021287 × 10^8. The sum of its digits is 31. It has a total of 1 prime factors and 2 positive divisors. There are 128021286 positive integers (up to 128021287) that are relatively prime to 128021287.

Interesting facts

128021287 has 2 divisors, whose sum is 128021288
The reverse of 128021287 is 782120821
Previous prime number is 1

Basic properties

Is Prime? yes
Number parity odd
Number length 9
Sum of Digits 31
Digital Root 4

Name

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

Notation

Scientific notation	1.28021287 × 10^8
Engineering notation	1.28021287 × 10^6

Prime Factorization of 128021287

Prime Factorization 128021287

Composite number

ω	Distinct Factors	1	Total number of distinct prime factors
Ω	Total Factors	1	Total number of prime factors
rad	Radical	128021287	Product of the distinct prime numbers

The prime factorization of 128021287 is 128021287. Since it has a total of 1 prime factors.

Most popular turbo-numbers

2, 4, 53, 19, 193, 436, 5438, 8888, 40263, 43321, 58775, 482230, 4790431, 4400366, 82424826, 81854848, 150477222, 782371005, 9259685423, 436241526

Basic calculations (n = 128021287)

Multiplication

n×y

n×2	256042574
n×3	384063861
n×4	512085148
n×5	640106435

Division

n÷y

n÷2	64010643.5
n÷3	42673762.333333
n÷3	32005321.75
n÷5	25604257.4

Exponentiation

n^y

n²	16389449925136369
n³	2.098198472638E+24
n⁴	2.6861406884855E+32
n⁵	3.4388318800298E+40

Nth Root

^y√n

²√n	11314.649221253
³√n	503.99635584625
⁴√n	106.37033995082
⁵√n	41.82697316919

Divisors of 128021287

1, 128021287

2 divisors

τ	Total Divisors	2	Total number of the positive divisors of n
σ	Sum of Divisors	128021288	Sum of all the positive divisors of n
s	Aliquot Sum	1	Sum of the proper positive divisors of n
A	Arithmetic Mean	64010644	Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G	Geometric Mean	11314.649265443	Returns the nth root of the product of n divisors
H	Harmonic Mean	1.9999999843776	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 128021287 can be divided by 2 positive divisors. The sum of these divisors (counting 128021287) is 128021288, the average is 64010644.

Base conversion 128021287

Base	System	Value
2	Binary	111101000010111001100100111
3	Ternary	22220220011012011
4	Quaternary	13220113030213
5	Quinary	230233140122
6	Senary	20411535051
8	Octal	750271447
10	Decimal	128021287
12	Duodecimal	36a5a487
16	Hexadecimal	7a17327
20	Vigesimal	2002d47
36	Base36	247xuv

Cryptographic Hash Functions

md5	acb0457bc5dcc6e38da56f808d3bf5a6
sha1	995c5cfa5db7f9074c4ca337013bad8f5442091c
sha256	974d8507bb9eeb0656eb3ccccddb85818c8a13c90ae4e5aeb310bf75cdf497fe
sha512	3ea9568ebfcaeca75627d4cb224155b35e0a435159a314a0c94a5901853ba3c4cd310d30aea4f91330c6793aeae173a1e094c6e93916482c29b3f0ff4bb65c00
ripemd-160	c1c103caea1a2a27d43abbd59e42f708728c5be5

128021287 as geometric shapes

Circle

Radius = n

Diameter	256042574
Circumference	804381469.48462
Area	5.1488975481186E+16

Sphere

Radius = n

Volume	8.7889132098839E+24
Surface area	2.0595590192474E+17
Circumference	804381469.48462

Square

Length = n

Perimeter	512085148
Area	16389449925136369
Diagonal	181049440.34786

Cube

Length = n

Surface area	98336699550818214
Volume	2.098198472638E+24
Space diagonal	221739373.53436

Equilateral Triangle

Length = n

Perimeter	384063861
Area	7.0968399946105E+15
Altitude	110869686.76718

Triangular Pyramid

Length = n

Surface area	7.0968399946105E+15
Volume	2.472750613796E+23
Height	60349813.449286