21491047 (number)

21491047 is an odd 8-digits prime number following 21491046 and preceding 21491048. In scientific notation, it is written as 2.1491047 × 10^7. The sum of its digits is 28. It has a total of 1 prime factors and 2 positive divisors. There are 21491046 positive integers (up to 21491047) that are relatively prime to 21491047.

Interesting facts

Basic properties

Name

Name twenty-one million four hundred ninety-one thousand forty-seven

Notation

Scientific notation 2.1491047 × 10^7
Engineering notation 2.1491047 × 10^6

Prime Factorization of 21491047

Prime Factorization 21491047

Composite number
ω Distinct Factors 1
Total number of distinct prime factors
Ω Total Factors 1
Total number of prime factors
rad Radical 21491047
Product of the distinct prime numbers

The prime factorization of 21491047 is 21491047. Since it has a total of 1 prime factors.

Most popular turbo-numbers

5, 8, 84, 20, 65, 150, 2150, 1394, 5918, 30836, 277841, 421928, 1474504, 3894862, 21039480, 27401164, 829747646, 144360950, 9729324100, 5637599717

Basic calculations (n = 21491047)

Multiplication

n×y
n×2 42982094
n×3 64473141
n×4 85964188
n×5 107455235

Division

n÷y
n÷2 10745523.5
n÷3 7163682.3333333
n÷3 5372761.75
n÷5 4298209.4

Exponentiation

ny
n2 461865101156209
n3 9.9259645966078E+21
n4 2.1331937166604E+29
n5 4.5844566424852E+36

Nth Root

y√n
2√n 4635.843720403
3√n 278.02628583637
4√n 68.087030486011
5√n 29.271940573114

Divisors of 21491047

1, 21491047

2 divisors

τ Total Divisors 2
Total number of the positive divisors of n
σ Sum of Divisors 21491048
Sum of all the positive divisors of n
s Aliquot Sum 1
Sum of the proper positive divisors of n
A Arithmetic Mean 10745524
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 4635.8438282582
Returns the nth root of the product of n divisors
H Harmonic Mean 1.999999906938
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21491047 can be divided by 2 positive divisors. The sum of these divisors (counting 21491047) is 21491048, the average is 10745524.

Base conversion 21491047

Base System Value
2 Binary 1010001111110110101100111
3 Ternary 1111102212011201
4 Quaternary 1101332311213
5 Quinary 21000203142
6 Senary 2044343331
8 Octal 121766547
10 Decimal 21491047
12 Duodecimal 7244b47
16 Hexadecimal 147ed67
20 Vigesimal 6e67c7
36 Base36 csmlj

Cryptographic Hash Functions

md5 f59593f41cd4a2b49efb9a04ee237716
sha1 ad6c1b04e166c5424424928999558be7b1c5cfcb
sha256 72a23cdb55b9bf3d06206d9a499d3f17dfea3b059b9b38cae638e4551fb946ba
sha512 7dd8498562f2c4020127048a65d91c1015f86544276b30c2681180231be0721436a28e904aa9975844a6eb78e5237bcfd9107e6700587145701b886e91474102
ripemd-160 0a9bfd41c5ccfa84553d480d56531375b88a6a22

21491047 as geometric shapes

Circle

Radius = n
Diameter 42982094
Circumference 135032230.74631
Area 1.4509920087419E+15

Sphere

Radius = n
Volume 4.1577783275327E+22
Surface area 5.8039680349674E+15
Circumference 135032230.74631

Square

Length = n
Perimeter 85964188
Area 461865101156209
Diagonal 30392930.136998

Cube

Length = n
Surface area 2771190606937254
Volume 9.9259645966078E+21
Space diagonal 37223585.311851

Equilateral Triangle

Length = n
Perimeter 64473141
Area 1.9999345536137E+14
Altitude 18611792.655925

Triangular Pyramid

Length = n
Surface area 1.9999345536137E+14
Volume 1.1697861460132E+21
Height 10130976.712333