128207988 (number)

128207988 is an even 9-digits composite number following 128207987 and preceding 128207989. In scientific notation, it is written as 1.28207988 × 10^8. The sum of its digits is 45. It has a total of 4 prime factors and 12 positive divisors. There are 42735960 positive integers (up to 128207988) that are relatively prime to 128207988.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 1.28207988 × 10^8
Engineering notation 1.28207988 × 10^6

Prime Factorization of 128207988

Prime Factorization 2 × 2 × 27 × 1187111

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 64103994
Product of the distinct prime numbers

The prime factorization of 128207988 is 2 × 2 × 27 × 1187111. Since it has a total of 4 prime factors.

Most popular turbo-numbers

8, 5, 11, 83, 615, 410, 5246, 7377, 12784, 4145, 347372, 732497, 1699699, 1277301, 96512642, 69819439, 201862100, 928668672, 6009916988, 2070319765

Basic calculations (n = 128207988)

Multiplication

n×y
n×2 256415976
n×3 384623964
n×4 512831952
n×5 641039940

Division

n÷y
n÷2 64103994
n÷3 42735996
n÷3 32051997
n÷5 25641597.6

Exponentiation

ny
n2 16437288187008144
n3 2.1073916466325E+24
n4 2.7018444294276E+32
n5 3.4639803818592E+40

Nth Root

y√n
2√n 11322.896625864
3√n 504.24123938773
4√n 106.40910029628
5√n 41.839165807574

Divisors of 128207988

1, 2, 4, 27, 54, 108, 1187111, 2374222, 4748444, 32051997, 64103994, 128207988

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -128207987
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 128207988 can be divided by 12 positive divisors. The sum of these divisors (counting 128207988) is 1, the average is 0.083333333333333.

Base conversion 128207988

Base System Value
2 Binary 111101001000100110001110100
3 Ternary 22221020122022000
4 Quaternary 13221010301310
5 Quinary 230310123423
6 Senary 20415535300
8 Octal 751046164
10 Decimal 128207988
12 Duodecimal 36b2a530
16 Hexadecimal 7a44c74
20 Vigesimal 2015jj8
36 Base36 24bxx0

Cryptographic Hash Functions

md5 fd3e2a65859722f7a2356a01c21d54c6
sha1 cff37f10164f5a30802b1bd9ea74146e45d1f35f
sha256 3b8bd2684bfb01fbc2dc58e43e6a957577210236af9daa6cd376d4212bfae3f1
sha512 1572910b6a052b7cc850b3c9fc06004057d3e447f170924aa2de4a16c5b12fe522b3d3446d6cb069526c34fd691b85f3be9fd0d332a7e33e2341b08aeef30bec
ripemd-160 30d5508633c88d7b28eeab1ad77e935c018b03d1

128207988 as geometric shapes

Circle

Radius = n
Diameter 256415976
Circumference 805554546.46466
Area 5.1639263813243E+16

Sphere

Radius = n
Volume 8.8274214870628E+24
Surface area 2.0655705525297E+17
Circumference 805554546.46466

Square

Length = n
Perimeter 512831952
Area 16437288187008144
Diagonal 181313475.43417

Cube

Length = n
Surface area 98623729122048864
Volume 2.1073916466325E+24
Space diagonal 222062749.15218

Equilateral Triangle

Length = n
Perimeter 384623964
Area 7.1175545696375E+15
Altitude 111031374.57609

Triangular Pyramid

Length = n
Surface area 7.1175545696375E+15
Volume 2.4835848732495E+23
Height 60437825.144722