128697681 (number)

128697681 is an odd 9-digits composite number following 128697680 and preceding 128697682. In scientific notation, it is written as 1.28697681 × 10^8. The sum of its digits is 48. It has a total of 3 prime factors and 8 positive divisors. There are 73541520 positive integers (up to 128697681) that are relatively prime to 128697681.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 1.28697681 × 10^8
Engineering notation 1.28697681 × 10^6

Prime Factorization of 128697681

Prime Factorization 3 × 7 × 6128461

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 128697681
Product of the distinct prime numbers

The prime factorization of 128697681 is 3 × 7 × 6128461. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 128697681)

Multiplication

n×y
n×2 257395362
n×3 386093043
n×4 514790724
n×5 643488405

Division

n÷y
n÷2 64348840.5
n÷3 42899227
n÷3 32174420.25
n÷5 25739536.2

Exponentiation

ny
n2 16563093094777761
n3 2.131631671485E+24
n4 2.7433605286627E+32
n5 3.5306413818583E+40

Nth Root

y√n
2√n 11344.500033056
3√n 504.88241029076
4√n 106.51056301164
5√n 41.871078196535

Divisors of 128697681

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 -128697680
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 128697681 can be divided by 8 positive divisors. The sum of these divisors (counting 128697681) is 1, the average is 0.125.

Base conversion 128697681

Base System Value
2 Binary 111101010111100010101010001
3 Ternary 22222011112000210
4 Quaternary 13222330111101
5 Quinary 230421311211
6 Senary 20434234333
8 Octal 752742521
10 Decimal 128697681
12 Duodecimal 371259a9
16 Hexadecimal 7abc551
20 Vigesimal 2047441
36 Base36 24mfrl

Cryptographic Hash Functions

md5 372b1858a753373b3077f2a4895c3af8
sha1 1fc835bda9789b00343712511e3e8015bfd0e903
sha256 a148641e1bbe67dbfb239259509b22e1f75f8f7c79ec8102a16ae9601256deb0
sha512 29700ca4bfd9cf150a787b6637804af096f458ca63ede82ddd117ec1c4fae20c9c092b15b629f0cac5ab4d38c59265a6d1134f7240cc8e078f7018ba976da2a4
ripemd-160 0bd9e568c9f3aee50e0cb59d5db2e3c9b21cae6e

128697681 as geometric shapes

Circle

Radius = n
Diameter 257395362
Circumference 808631378.32729
Area 5.2034491587278E+16

Sphere

Radius = n
Volume 8.9289578657289E+24
Surface area 2.0813796634911E+17
Circumference 808631378.32729

Square

Length = n
Perimeter 514790724
Area 16563093094777761
Diagonal 182006005.91617

Cube

Length = n
Surface area 99378558568666566
Volume 2.131631671485E+24
Space diagonal 222910922.30829

Equilateral Triangle

Length = n
Perimeter 386093043
Area 7.1720296926621E+15
Altitude 111455461.15415

Triangular Pyramid

Length = n
Surface area 7.1720296926621E+15
Volume 2.5121520164984E+23
Height 60668668.638722