28668891 (number)

28668891 is an odd 8-digits composite number following 28668890 and preceding 28668892. In scientific notation, it is written as 2.8668891 × 10^7. The sum of its digits is 48. It has a total of 4 prime factors and 16 positive divisors. There are 17942400 positive integers (up to 28668891) that are relatively prime to 28668891.

Interesting facts

Basic properties

Name

Name twenty-eight million six hundred sixty-eight thousand eight hundred ninety-one

Notation

Scientific notation 2.8668891 × 10^7
Engineering notation 2.8668891 × 10^6

Prime Factorization of 28668891

Prime Factorization 3 × 19 × 113 × 4451

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 28668891
Product of the distinct prime numbers

The prime factorization of 28668891 is 3 × 19 × 113 × 4451. Since it has a total of 4 prime factors.

Most popular turbo-numbers

1, 9, 45, 29, 843, 918, 1338, 6337, 83481, 20639, 734675, 367934, 7666931, 7852460, 36267908, 41683975, 975675169, 16448024, 3703615176, 6774997369

Basic calculations (n = 28668891)

Multiplication

n×y
n×2 57337782
n×3 86006673
n×4 114675564
n×5 143344455

Division

n÷y
n÷2 14334445.5
n÷3 9556297
n÷3 7167222.75
n÷5 5733778.2

Exponentiation

ny
n2 821905311169881
n3 2.356311377825E+22
n4 6.7552834052926E+29
n5 1.9366648362044E+37

Nth Root

y√n
2√n 5354.3338521239
3√n 306.05792615202
4√n 73.173313797613
5√n 31.008601418526

Divisors of 28668891

1, 3, 19, 57, 113, 339, 2147, 4451, 6441, 13353, 84569, 253707, 502963, 1508889, 9556297, 28668891

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -28668890
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 28668891 can be divided by 16 positive divisors. The sum of these divisors (counting 28668891) is 1, the average is 0.0625.

Base conversion 28668891

Base System Value
2 Binary 1101101010111001111011011
3 Ternary 1222221112022210
4 Quaternary 1231113033123
5 Quinary 24314401031
6 Senary 2502250203
8 Octal 155271733
10 Decimal 28668891
12 Duodecimal 9726963
16 Hexadecimal 1b573db
20 Vigesimal 8j3c4b
36 Base36 h2h23

Cryptographic Hash Functions

md5 eab317053c3c2f1ef6c0a9834de9faba
sha1 ae82e4a780932ddb00df76c44d2b450145df1ecd
sha256 1edc6113f31d3a787e98fdb096bcd86df0b989a3d71bea14ada4da265b70c111
sha512 71246a5ff37e22264654f0d1273c98d6e131df11bc36bea960bcf470099d4388faeead1dec616df23888f6141abb8d4541b34af534efb7ca79d0681dc520325f
ripemd-160 e51b2e0d9068e4de0f957fc5b3611b2a2738a42d

28668891 as geometric shapes

Circle

Radius = n
Diameter 57337782
Circumference 180131954.70433
Area 2.5820916875177E+15

Sphere

Radius = n
Volume 9.8700940188603E+22
Surface area 1.0328366750071E+16
Circumference 180131954.70433

Square

Length = n
Perimeter 114675564
Area 821905311169881
Diagonal 40543934.470396

Cube

Length = n
Surface area 4931431867019286
Volume 2.356311377825E+22
Space diagonal 49655975.808654

Equilateral Triangle

Length = n
Perimeter 86006673
Area 3.5589543948924E+14
Altitude 24827987.904327

Triangular Pyramid

Length = n
Surface area 3.5589543948924E+14
Volume 2.7769395897452E+21
Height 13514644.823465