21497979 (number)

21497979 is an odd 8-digits composite number following 21497978 and preceding 21497980. In scientific notation, it is written as 2.1497979 × 10^7. The sum of its digits is 48. It has a total of 4 prime factors and 16 positive divisors. There are 13173888 positive integers (up to 21497979) that are relatively prime to 21497979.

Interesting facts

Basic properties

Name

Name twenty-one million four hundred ninety-seven thousand nine hundred seventy-nine

Notation

Scientific notation 2.1497979 × 10^7
Engineering notation 2.1497979 × 10^6

Prime Factorization of 21497979

Prime Factorization 3 × 17 × 43 × 9803

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21497979
Product of the distinct prime numbers

The prime factorization of 21497979 is 3 × 17 × 43 × 9803. Since it has a total of 4 prime factors.

Most popular turbo-numbers

7, 2, 67, 9, 507, 103, 4871, 2078, 11784, 30239, 768160, 918329, 7899923, 2959984, 59472787, 42587871, 75650661, 521634388, 3576234180, 6669290082

Basic calculations (n = 21497979)

Multiplication

n×y
n×2 42995958
n×3 64493937
n×4 85991916
n×5 107489895

Division

n÷y
n÷2 10748989.5
n÷3 7165993
n÷3 5374494.75
n÷5 4299595.8

Exponentiation

ny
n2 462163101084441
n3 9.9355726416882E+21
n4 2.1359473200399E+29
n5 4.5918550631323E+36

Nth Root

y√n
2√n 4636.5913125916
3√n 278.05617535322
4√n 68.092520239683
5√n 29.273828679515

Divisors of 21497979

1, 3, 17, 43, 51, 129, 731, 2193, 9803, 29409, 166651, 421529, 499953, 1264587, 7165993, 21497979

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 -21497978
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 21497979 can be divided by 16 positive divisors. The sum of these divisors (counting 21497979) is 1, the average is 0.0625.

Base conversion 21497979

Base System Value
2 Binary 1010010000000100001111011
3 Ternary 1111110012200110
4 Quaternary 1102000201323
5 Quinary 21000413404
6 Senary 2044435403
8 Octal 122004173
10 Decimal 21497979
12 Duodecimal 7248b63
16 Hexadecimal 148087b
20 Vigesimal 6e74ij
36 Base36 csry3

Cryptographic Hash Functions

md5 17118b6da122ea1d7350907be5f1d22c
sha1 ab853d5407b8c4741f107074d6d8d47fa6ea452a
sha256 70350c7b044878c09f315d14f8091c28f6a1c5b5abfaf810ec4346d8805b10f3
sha512 293f59494beaabd48eeb937db9dde7b407c5e841bb64ddd22f42d6877a7b5616a6c3b591d3606d7a6cb0923c12451f4732f933821826a375d819a475a0fee13e
ripemd-160 a95df2ded59575a52dc2687c9a7238ded3981540

21497979 as geometric shapes

Circle

Radius = n
Diameter 42995958
Circumference 135075785.78686
Area 1.4519282031272E+15

Sphere

Radius = n
Volume 4.1618029360447E+22
Surface area 5.8077128125086E+15
Circumference 135075785.78686

Square

Length = n
Perimeter 85991916
Area 462163101084441
Diagonal 30402733.465412

Cube

Length = n
Surface area 2772978606506646
Volume 9.9355726416882E+21
Space diagonal 37235591.888049

Equilateral Triangle

Length = n
Perimeter 64493937
Area 2.0012249311546E+14
Altitude 18617795.944024

Triangular Pyramid

Length = n
Surface area 2.0012249311546E+14
Volume 1.1709184649849E+21
Height 10134244.488471