128698721 (number)

128698721 is an odd 9-digits composite number following 128698720 and preceding 128698722. In scientific notation, it is written as 1.28698721 × 10^8. The sum of its digits is 44. It has a total of 4 prime factors and 16 positive divisors. There are 118804224 positive integers (up to 128698721) that are relatively prime to 128698721.

Interesting facts

Basic properties

Name

Name one hundred twenty-eight million six hundred ninety-eight thousand seven hundred twenty-one

Notation

Scientific notation 1.28698721 × 10^8
Engineering notation 1.28698721 × 10^6

Prime Factorization of 128698721

Prime Factorization 17 × 83 × 463 × 197

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 128698721
Product of the distinct prime numbers

The prime factorization of 128698721 is 17 × 83 × 463 × 197. Since it has a total of 4 prime factors.

Most popular turbo-numbers

1, 8, 14, 89, 508, 412, 3753, 9108, 47271, 46321, 476322, 843179, 8560337, 902799, 53721999, 57685249, 858078534, 665947887, 8583206309, 3903687802

Basic calculations (n = 128698721)

Multiplication

n×y
n×2 257397442
n×3 386096163
n×4 514794884
n×5 643493605

Division

n÷y
n÷2 64349360.5
n÷3 42899573.666667
n÷3 32174680.25
n÷5 25739744.2

Exponentiation

ny
n2 16563360787035841
n3 2.1316833487531E+24
n4 2.7434492056152E+32
n5 3.5307840389114E+40

Nth Root

y√n
2√n 11344.545870153
3√n 504.88377026423
4√n 106.51077818772
5√n 41.871145867965

Divisors of 128698721

1, 17, 83, 197, 463, 1411, 3349, 7871, 16351, 38429, 91211, 277967, 653293, 1550587, 7570513, 128698721

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -128698720
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 128698721 can be divided by 16 positive divisors. The sum of these divisors (counting 128698721) is 1, the average is 0.0625.

Base conversion 128698721

Base System Value
2 Binary 111101010111100100101100001
3 Ternary 22222011120110022
4 Quaternary 13222330211201
5 Quinary 230421324341
6 Senary 20434243225
8 Octal 752744541
10 Decimal 128698721
12 Duodecimal 37126515
16 Hexadecimal 7abc961
20 Vigesimal 20476g1
36 Base36 24mgkh

Cryptographic Hash Functions

md5 234426a6a0b792dc4c40c6909e3e5db9
sha1 4d5b3e25e2c4b76aaa768b5182fe681db79d8e66
sha256 b45795b49cf80fc1c49151f9dac007726fe9870430b5a4393afeceab7388cdbc
sha512 ed58e12451393f9d98382fb24ebdb5006f28164255313e5cb8c886a25c3cca2fd318ce541cedc3d2b00ba02211f6ae2b1670e6e42929cbcd518e09d2ba496272
ripemd-160 6a5192886f868566299db0ee24a48e30bf69fad5

128698721 as geometric shapes

Circle

Radius = n
Diameter 257397442
Circumference 808637912.84
Area 5.2035332567309E+16

Sphere

Radius = n
Volume 8.9291743309631E+24
Surface area 2.0814133026924E+17
Circumference 808637912.84

Square

Length = n
Perimeter 514794884
Area 16563360787035841
Diagonal 182007476.69827

Cube

Length = n
Surface area 99380164722215046
Volume 2.1316833487531E+24
Space diagonal 222912723.64113

Equilateral Triangle

Length = n
Perimeter 386096163
Area 7.17214560681E+15
Altitude 111456361.82057

Triangular Pyramid

Length = n
Surface area 7.17214560681E+15
Volume 2.5122129187429E+23
Height 60669158.899424