28988891 (number)

28988891 is an odd 8-digits composite number following 28988890 and preceding 28988892. In scientific notation, it is written as 2.8988891 × 10^7. The sum of its digits is 53. It has a total of 2 prime factors and 4 positive divisors. There are 28907784 positive integers (up to 28988891) that are relatively prime to 28988891.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.8988891 × 10^7
Engineering notation 2.8988891 × 10^6

Prime Factorization of 28988891

Prime Factorization 359 × 80749

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 28988891
Product of the distinct prime numbers

The prime factorization of 28988891 is 359 × 80749. Since it has a total of 2 prime factors.

Most popular turbo-numbers

5, 4, 100, 65, 251, 333, 5111, 7710, 80173, 20507, 860542, 305381, 5443366, 2899872, 74295770, 3166547, 42423881, 445176077, 4260902651, 4390079981

Basic calculations (n = 28988891)

Multiplication

n×y
n×2 57977782
n×3 86966673
n×4 115955564
n×5 144944455

Division

n÷y
n÷2 14494445.5
n÷3 9662963.6666667
n÷3 7247222.75
n÷5 5797778.2

Exponentiation

ny
n2 840355801409881
n3 2.4360982728289E+22
n4 7.0619787296324E+29
n5 2.0471893163763E+37

Nth Root

y√n
2√n 5384.1332635811
3√n 307.19244725061
4√n 73.376653395893
5√n 31.077517541246

Divisors of 28988891

1, 359, 80749, 28988891

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 -28988890
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 28988891 can be divided by 4 positive divisors. The sum of these divisors (counting 28988891) is 1, the average is 0.25.

Base conversion 28988891

Base System Value
2 Binary 1101110100101010111011011
3 Ternary 2000112210021122
4 Quaternary 1232211113123
5 Quinary 24410121031
6 Senary 2513155455
8 Octal 156452733
10 Decimal 28988891
12 Duodecimal 985bb8b
16 Hexadecimal 1ba55db
20 Vigesimal 913c4b
36 Base36 h9byz

Cryptographic Hash Functions

md5 c9184626a957361cc9b367189e588171
sha1 bc226028c55a1f743aa9a378fc42fdf9b67063cf
sha256 7624b260bb8bfb988fc033e838b0bcdc08bc9fb54949f242915ea3ce3f0b5288
sha512 c852c71c6c085c2e871e6855f6a00bdbfe5051022c8592bc1d515ffd47aa3beb36d8315d8d5b19ec2e1f1fcdbdb6d963732ced90941646f401b485cc8674cb10
ripemd-160 dd0b535c310f8a2894e0c16430a239c49e57dda4

28988891 as geometric shapes

Circle

Radius = n
Diameter 57977782
Circumference 182142574.00263
Area 2.6400556121108E+15

Sphere

Radius = n
Volume 1.0204304583123E+23
Surface area 1.0560222448443E+16
Circumference 182142574.00263

Square

Length = n
Perimeter 115955564
Area 840355801409881
Diagonal 40996482.810355

Cube

Length = n
Surface area 5042134808459286
Volume 2.4360982728289E+22
Space diagonal 50210232.067076

Equilateral Triangle

Length = n
Perimeter 86966673
Area 3.6388473611929E+14
Altitude 25105116.033538

Triangular Pyramid

Length = n
Surface area 3.6388473611929E+14
Volume 2.8709693472569E+21
Height 13665494.270118