128212821 (number)

128212821 is an odd 9-digits composite number following 128212820 and preceding 128212822. In scientific notation, it is written as 1.28212821 × 10^8. The sum of its digits is 27. It has a total of 3 prime factors and 8 positive divisors. There are 77704560 positive integers (up to 128212821) that are relatively prime to 128212821.

Interesting facts

Basic properties

Name

Name one hundred twenty-eight million two hundred twelve thousand eight hundred twenty-one

Notation

Scientific notation 1.28212821 × 10^8
Engineering notation 1.28212821 × 10^6

Prime Factorization of 128212821

Prime Factorization 99 × 3 × 431693

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 128212821
Product of the distinct prime numbers

The prime factorization of 128212821 is 99 × 3 × 431693. Since it has a total of 3 prime factors.

Most popular turbo-numbers

1, 3, 93, 65, 112, 193, 1110, 1246, 99238, 27041, 661179, 689722, 7227046, 4806682, 61974675, 26747504, 454716322, 983554245, 4790818127, 8984619497

Basic calculations (n = 128212821)

Multiplication

n×y
n×2 256425642
n×3 384638463
n×4 512851284
n×5 641064105

Division

n÷y
n÷2 64106410.5
n÷3 42737607
n÷3 32053205.25
n÷5 25642564.2

Exponentiation

ny
n2 16438527468778041
n3 2.107629979858E+24
n4 2.7022518534177E+32
n5 3.4646333317916E+40

Nth Root

y√n
2√n 11323.110040974
3√n 504.24757536135
4√n 106.41010309634
5√n 41.839481241335

Divisors of 128212821

1, 3, 99, 297, 431693, 1295079, 42737607, 128212821

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 -128212820
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 128212821 can be divided by 8 positive divisors. The sum of these divisors (counting 128212821) is 1, the average is 0.125.

Base conversion 128212821

Base System Value
2 Binary 111101001000101111101010101
3 Ternary 22221020212221000
4 Quaternary 13221011331111
5 Quinary 230310302241
6 Senary 20420013513
8 Octal 751057525
10 Decimal 128212821
12 Duodecimal 36b31299
16 Hexadecimal 7a45f55
20 Vigesimal 2016c11
36 Base36 24c1n9

Cryptographic Hash Functions

md5 9d9c88afbe4d109cd1522c96c380b911
sha1 8532a7dd44e02aac1b2b609f284fcb64d6ef433b
sha256 305fbe4e2e0597d5fafea62ec43e4181b8e76d5d5ee6d2e2eb74ef9e2bd57e52
sha512 adae2d404724b2dfe7848ba88f984954ce423eafec463c115cf2d06d302142d8c20765329aa8e86779d36e4488b1857fe334a31230f82f66a0acbc87e11288e6
ripemd-160 9b8754e30d9e82ef9c8139f28a98365067e93666

128212821 as geometric shapes

Circle

Radius = n
Diameter 256425642
Circumference 805584913.09925
Area 5.1643157131747E+16

Sphere

Radius = n
Volume 8.8284198149434E+24
Surface area 2.0657262852699E+17
Circumference 805584913.09925

Square

Length = n
Perimeter 512851284
Area 16438527468778041
Diagonal 181320310.32831

Cube

Length = n
Surface area 98631164812668246
Volume 2.107629979858E+24
Space diagonal 222071120.15373

Equilateral Triangle

Length = n
Perimeter 384638463
Area 7.118091194385E+15
Altitude 111035560.07687

Triangular Pyramid

Length = n
Surface area 7.118091194385E+15
Volume 2.4838657516495E+23
Height 60440103.442771