21091878 (number)

21091878 is an even 8-digits composite number following 21091877 and preceding 21091879. In scientific notation, it is written as 2.1091878 × 10^7. The sum of its digits is 36. It has a total of 4 prime factors and 12 positive divisors. There are 7030620 positive integers (up to 21091878) that are relatively prime to 21091878.

Interesting facts

Basic properties

Name

Name twenty-one million ninety-one thousand eight hundred seventy-eight

Notation

Scientific notation 2.1091878 × 10^7
Engineering notation 2.1091878 × 10^6

Prime Factorization of 21091878

Prime Factorization 2 × 3 × 3 × 1171771

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 7030626
Product of the distinct prime numbers

The prime factorization of 21091878 is 2 × 3 × 3 × 1171771. Since it has a total of 4 prime factors.

Most popular turbo-numbers

4, 5, 64, 87, 872, 768, 8, 8915, 77843, 12172, 836831, 210585, 3857890, 8868757, 64423013, 57247486, 599166529, 592746968, 7882024353, 4290656648

Basic calculations (n = 21091878)

Multiplication

n×y
n×2 42183756
n×3 63275634
n×4 84367512
n×5 105459390

Division

n÷y
n÷2 10545939
n÷3 7030626
n÷3 5272969.5
n÷5 4218375.6

Exponentiation

ny
n2 444867317566884
n3 9.383087188308E+21
n4 1.9790693023915E+29
n5 4.1742288279588E+36

Nth Root

y√n
2√n 4592.5894656501
3√n 276.29418851834
4√n 67.768646626962
5√n 29.162385733934

Divisors of 21091878

1, 2, 3, 6, 9, 18, 1171771, 2343542, 3515313, 7030626, 10545939, 21091878

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21091877
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21091878 can be divided by 12 positive divisors. The sum of these divisors (counting 21091878) is 1, the average is 0.083333333333333.

Base conversion 21091878

Base System Value
2 Binary 1010000011101011000100110
3 Ternary 1110200120121200
4 Quaternary 1100131120212
5 Quinary 20344420003
6 Senary 2032023330
8 Octal 120353046
10 Decimal 21091878
12 Duodecimal 7091b46
16 Hexadecimal 141d626
20 Vigesimal 6bg9di
36 Base36 ck2li

Cryptographic Hash Functions

md5 d0ac066c65ff2acf8820fe928a98359d
sha1 e7159f4d3f6a3617caf95271a58850285707e13c
sha256 b21a700dc8b6c88438ec5f22e128dd8b4c2a30b36542da45ce90199780c6afbb
sha512 58148fbc746d3818e9d776878ada5a4a35b28d238fb541a9e24d68c0a8a38c5b98950c172c5113c2c803aa4f55d9036d311d2b30281b5390e18acb420762bc29
ripemd-160 2e966cde2f442fc57ce55bd7bd37aac712b94878

21091878 as geometric shapes

Circle

Radius = n
Diameter 42183756
Circumference 132524177.95042
Area 1.3975918966903E+15

Sphere

Radius = n
Volume 3.9303783705041E+22
Surface area 5.5903675867613E+15
Circumference 132524177.95042

Square

Length = n
Perimeter 84367512
Area 444867317566884
Diagonal 29828419.923519

Cube

Length = n
Surface area 2669203905401304
Volume 9.383087188308E+21
Space diagonal 36532204.323044

Equilateral Triangle

Length = n
Perimeter 63275634
Area 1.9263319916318E+14
Altitude 18266102.161522

Triangular Pyramid

Length = n
Surface area 1.9263319916318E+14
Volume 1.1058074298862E+21
Height 9942806.6411729