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

128220991 (number)

128220991 is an odd 9-digits composite number following 128220990 and preceding 128220992. In scientific notation, it is written as 1.28220991 × 10^8. The sum of its digits is 34. It has a total of 2 prime factors and 4 positive divisors. There are 124084800 positive integers (up to 128220991) that are relatively prime to 128220991.

Interesting facts

128220991 has 4 divisors, whose sum is 132357184
The reverse of 128220991 is 199022821
Previous prime number is 31

Basic properties

Is Prime? no
Number parity odd
Number length 9
Sum of Digits 34
Digital Root 7

Name

Name	one hundred twenty-eight million two hundred twenty thousand nine hundred ninety-one

Notation

Scientific notation	1.28220991 × 10^8
Engineering notation	1.28220991 × 10^6

Prime Factorization of 128220991

Prime Factorization 31 × 4136161

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	128220991	Product of the distinct prime numbers

The prime factorization of 128220991 is 31 × 4136161. Since it has a total of 2 prime factors.

Most popular turbo-numbers

10, 7, 40, 97, 26, 754, 6570, 6093, 11959, 27991, 510373, 885541, 5155420, 88742, 75118613, 63114977, 355870289, 158051588, 8405105127, 4401662326

Basic calculations (n = 128220991)

Multiplication

n×y

n×2	256441982
n×3	384662973
n×4	512883964
n×5	641104955

Division

n÷y

n÷2	64110495.5
n÷3	42740330.333333
n÷3	32055247.75
n÷5	25644198.2

Exponentiation

n^y

n²	16440622533022081
n³	2.108032913841E+24
n⁴	2.7029406927331E+32
n⁵	3.4657373423647E+40

Nth Root

^y√n

²√n	11323.470801835
³√n	504.25828571817
⁴√n	106.41179822667
⁵√n	41.840014448305

Divisors of 128220991

1, 31, 4136161, 128220991

4 divisors

τ	Total Divisors	4	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-128220990	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.25	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	4	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 128220991 can be divided by 4 positive divisors. The sum of these divisors (counting 128220991) is 1, the average is 0.25.

Base conversion 128220991

Base	System	Value
2	Binary	111101001000111111100111111
3	Ternary	22221021022010121
4	Quaternary	13221013330333
5	Quinary	230311032431
6	Senary	20420115411
8	Octal	751077477
10	Decimal	128220991
12	Duodecimal	36b35b67
16	Hexadecimal	7a47f3f
20	Vigesimal	2017c9b
36	Base36	24c7y7

Cryptographic Hash Functions

md5	dd344696fc2218bc00b9743d298b46db
sha1	8f652d4599e54c2050520864b8a5f472768fc74b
sha256	ce9f2a946bbaf88d7799dfd392f3bef29aff4ff093f4fa7a432d6b4c58462700
sha512	de9a4cf8d2ddbb95130fabb6cdfca3ba4548aab6f15371fee453674c170713a4a6fa0c303b6bb509050781ddfe6ad9cbdea044df0cdf0941da343bf210ab0bdf
ripemd-160	d5b3c4530ed423ad542b11093e0207d6ac53005d

128220991 as geometric shapes

Circle

Radius = n

Diameter	256441982
Circumference	805636246.72321
Area	5.1649738970185E+16

Sphere

Radius = n

Volume	8.8301076208646E+24
Surface area	2.0659895588074E+17
Circumference	805636246.72321

Square

Length = n

Perimeter	512883964
Area	16440622533022081
Diagonal	181331864.45312

Cube

Length = n

Surface area	98643735198132486
Volume	2.108032913841E+24
Space diagonal	222085271.00883

Equilateral Triangle

Length = n

Perimeter	384662973
Area	7.118998383814E+15
Altitude	111042635.50442

Triangular Pyramid

Length = n

Surface area	7.118998383814E+15
Volume	2.4843406139024E+23
Height	60443954.817706