28931538 (number)

28931538 is an even 8-digits composite number following 28931537 and preceding 28931539. In scientific notation, it is written as 2.8931538 × 10^7. The sum of its digits is 39. It has a total of 5 prime factors and 32 positive divisors. There are 9369360 positive integers (up to 28931538) that are relatively prime to 28931538.

Interesting facts

Basic properties

Name

Name twenty-eight million nine hundred thirty-one thousand five hundred thirty-eight

Notation

Scientific notation 2.8931538 × 10^7
Engineering notation 2.8931538 × 10^6

Prime Factorization of 28931538

Prime Factorization 2 × 3 × 67 × 79 × 911

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 28931538
Product of the distinct prime numbers

The prime factorization of 28931538 is 2 × 3 × 67 × 79 × 911. Since it has a total of 5 prime factors.

Most popular turbo-numbers

9, 5, 48, 78, 60, 263, 9962, 2001, 43857, 78313, 101338, 651705, 1339670, 4593957, 34617451, 42786370, 816703796, 487934061, 8604706, 3921645132

Basic calculations (n = 28931538)

Multiplication

n×y
n×2 57863076
n×3 86794614
n×4 115726152
n×5 144657690

Division

n÷y
n÷2 14465769
n÷3 9643846
n÷3 7232884.5
n÷5 5786307.6

Exponentiation

ny
n2 837033891045444
n3 2.4216677826069E+22
n4 7.0062573475868E+29
n5 2.0270180068949E+37

Nth Root

y√n
2√n 5378.8045140161
3√n 306.98972545341
4√n 73.340333473581
5√n 31.065210750445

Divisors of 28931538

1, 2, 3, 6, 67, 79, 134, 158, 201, 237, 402, 474, 911, 1822, 2733, 5293, 5466, 10586, 15879, 31758, 61037, 71969, 122074, 143938, 183111, 215907, 366222, 431814, 4821923, 9643846, 14465769, 28931538

32 divisors

τ Total Divisors 32
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -28931537
Sum of the proper positive divisors of n
A Arithmetic Mean 0.03125
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 32
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 28931538 can be divided by 32 positive divisors. The sum of these divisors (counting 28931538) is 1, the average is 0.03125.

Base conversion 28931538

Base System Value
2 Binary 1101110010111010111010010
3 Ternary 2000102212121110
4 Quaternary 1232113113102
5 Quinary 24401302123
6 Senary 2512034150
8 Octal 156272722
10 Decimal 28931538
12 Duodecimal 9832956
16 Hexadecimal 1b975d2
20 Vigesimal 90g8gi
36 Base36 h83pu

Cryptographic Hash Functions

md5 e473e31a65df437e622ef906a5dcee09
sha1 b55afbc14e2071065d944bc7bd8e42424a6df5f5
sha256 fc7f8e9c66e6e04a1ac80ae91015345baca6f6a7fe4d1e8b9024ce756423e567
sha512 1a2df6668958106c8e2c5568083a0d52b5aa8519af24ce147a04164535a623531723d05ede616aa22e618f77ffc04d88707062cbf8f5573a21f336a81ea7b9fd
ripemd-160 9efaf68344edf6515ddc6d65116997396b8926bd

28931538 as geometric shapes

Circle

Radius = n
Diameter 57863076
Circumference 181782214.47571
Area 2.629619522914E+15

Sphere

Radius = n
Volume 1.0143858287031E+23
Surface area 1.0518478091656E+16
Circumference 181782214.47571

Square

Length = n
Perimeter 115726152
Area 837033891045444
Diagonal 40915373.419913

Cube

Length = n
Surface area 5022203346272664
Volume 2.4216677826069E+22
Space diagonal 50110893.75711

Equilateral Triangle

Length = n
Perimeter 86794614
Area 3.6244630673695E+14
Altitude 25055446.878555

Triangular Pyramid

Length = n
Surface area 3.6244630673695E+14
Volume 2.8539628514372E+21
Height 13638457.806638