28897731 (number)

28897731 is an odd 8-digits composite number following 28897730 and preceding 28897732. In scientific notation, it is written as 2.8897731 × 10^7. The sum of its digits is 45. It has a total of 2 prime factors and 4 positive divisors. There are 19265148 positive integers (up to 28897731) that are relatively prime to 28897731.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.8897731 × 10^7
Engineering notation 2.8897731 × 10^6

Prime Factorization of 28897731

Prime Factorization 9 × 3210859

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 28897731
Product of the distinct prime numbers

The prime factorization of 28897731 is 9 × 3210859. Since it has a total of 2 prime factors.

Most popular turbo-numbers

2, 8, 64, 30, 889, 181, 3091, 9028, 98564, 46008, 448978, 291533, 7688988, 5559252, 17176225, 67805, 628677963, 605734650, 7337967614, 2953019053

Basic calculations (n = 28897731)

Multiplication

n×y
n×2 57795462
n×3 86693193
n×4 115590924
n×5 144488655

Division

n÷y
n÷2 14448865.5
n÷3 9632577
n÷3 7224432.75
n÷5 5779546.2

Exponentiation

ny
n2 835078856948361
n3 2.4131884171881E+22
n4 6.9735669732218E+29
n5 2.0152026250265E+37

Nth Root

y√n
2√n 5375.6609826141
3√n 306.87010458936
4√n 73.318899218511
5√n 31.057947308003

Divisors of 28897731

1, 9, 3210859, 28897731

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 -28897730
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 28897731 can be divided by 4 positive divisors. The sum of these divisors (counting 28897731) is 1, the average is 0.25.

Base conversion 28897731

Base System Value
2 Binary 1101110001111000111000011
3 Ternary 2000101011020100
4 Quaternary 1232033013003
5 Quinary 24344211411
6 Senary 2511213443
8 Octal 156170703
10 Decimal 28897731
12 Duodecimal 9817283
16 Hexadecimal 1b8f1c3
20 Vigesimal 90c46b
36 Base36 h7dmr

Cryptographic Hash Functions

md5 ca65a2d9999d7727478113e12b1f3010
sha1 475e080c958cc9dfbddb375c0e53a71f95ad6234
sha256 e5439d42cee26caaae3c64e0e0f2afd92208553ba7dd53401928558395629f27
sha512 c4195900e2e15e37e4dc5aeb3a5ebb0ff0e8a0485afc9ce4f30382bb8e8a1d71fe2d06b3a813feac0bfbaafd9ad680fbe33921012bdeca8de097a7e6d4f449dd
ripemd-160 d56db1afa1b8f3cb7c497d9292df8a693277fdd8

28897731 as geometric shapes

Circle

Radius = n
Diameter 57795462
Circumference 181569798.83003
Area 2.6234776021571E+15

Sphere

Radius = n
Volume 1.0108340004222E+23
Surface area 1.0493910408629E+16
Circumference 181569798.83003

Square

Length = n
Perimeter 115590924
Area 835078856948361
Diagonal 40867563.102009

Cube

Length = n
Surface area 5010473141690166
Volume 2.4131884171881E+22
Space diagonal 50052338.315458

Equilateral Triangle

Length = n
Perimeter 86693193
Area 3.6159975214028E+14
Altitude 25026169.157729

Triangular Pyramid

Length = n
Surface area 3.6159975214028E+14
Volume 2.8439698234576E+21
Height 13622521.034003