21031978 (number)

21031978 is an even 8-digits composite number following 21031977 and preceding 21031979. In scientific notation, it is written as 2.1031978 × 10^7. The sum of its digits is 31. It has a total of 5 prime factors and 24 positive divisors. There are 9493440 positive integers (up to 21031978) that are relatively prime to 21031978.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1031978 × 10^7
Engineering notation 2.1031978 × 10^6

Prime Factorization of 21031978

Prime Factorization 2 × 11 × 11 × 233 × 373

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 1911998
Product of the distinct prime numbers

The prime factorization of 21031978 is 2 × 11 × 11 × 233 × 373. Since it has a total of 5 prime factors.

Most popular turbo-numbers

10, 7, 92, 10, 139, 641, 13, 9967, 43771, 84614, 764290, 639768, 6231488, 5541412, 82587571, 9896531, 317265320, 928766597, 1111918343, 31524144

Basic calculations (n = 21031978)

Multiplication

n×y
n×2 42063956
n×3 63095934
n×4 84127912
n×5 105159890

Division

n÷y
n÷2 10515989
n÷3 7010659.3333333
n÷3 5257994.5
n÷5 4206395.6

Exponentiation

ny
n2 442344098592484
n3 9.303371350027E+21
n4 1.956683015596E+29
n5 4.1152914136988E+36

Nth Root

y√n
2√n 4586.0634535514
3√n 276.03238610372
4√n 67.720480310992
5√n 29.14580290847

Divisors of 21031978

1, 2, 11, 22, 121, 233, 242, 373, 466, 746, 2563, 4103, 5126, 8206, 28193, 45133, 56386, 86909, 90266, 173818, 955999, 1911998, 10515989, 21031978

24 divisors

τ Total Divisors 24
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21031977
Sum of the proper positive divisors of n
A Arithmetic Mean 0.041666666666667
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 24
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21031978 can be divided by 24 positive divisors. The sum of these divisors (counting 21031978) is 1, the average is 0.041666666666667.

Base conversion 21031978

Base System Value
2 Binary 1010000001110110000101010
3 Ternary 1110120112110011
4 Quaternary 1100032300222
5 Quinary 20341010403
6 Senary 2030442134
8 Octal 120166052
10 Decimal 21031978
12 Duodecimal 706334a
16 Hexadecimal 140ec2a
20 Vigesimal 6b8jii
36 Base36 cisdm

Cryptographic Hash Functions

md5 6a69d1eb2085e9b1b56b3f6fe9cffafe
sha1 a8f93edc04e46e2cb883669adc8a5963c62b72d8
sha256 11f8bc091ea2c5b09fd943681b9377eeacbbb4df0599031a2c75126bf62ec042
sha512 3317cb182479c1dc54aa655ed5560074a7b288b7c2a847ec8d4daa565bf7d6f68856d426974763b44934a80aab5de0cf72da60a6541bafdb962e80dcd8277625
ripemd-160 45aa4beaba17a6265cfdd04b85243eb63a8bc515

21031978 as geometric shapes

Circle

Radius = n
Diameter 42063956
Circumference 132147815.15052
Area 1.3896649704969E+15

Sphere

Radius = n
Volume 3.8969870782483E+22
Surface area 5.5586598819878E+15
Circumference 132147815.15052

Square

Length = n
Perimeter 84127912
Area 442344098592484
Diagonal 29743708.531133

Cube

Length = n
Surface area 2654064591554904
Volume 9.303371350027E+21
Space diagonal 36428454.479671

Equilateral Triangle

Length = n
Perimeter 63095934
Area 1.9154061329761E+14
Altitude 18214227.239835

Triangular Pyramid

Length = n
Surface area 1.9154061329761E+14
Volume 1.0964128282501E+21
Height 9914569.5103775