21493857 (number)

21493857 is an odd 8-digits composite number following 21493856 and preceding 21493858. In scientific notation, it is written as 2.1493857 × 10^7. The sum of its digits is 39. It has a total of 3 prime factors and 8 positive divisors. There are 11165520 positive integers (up to 21493857) that are relatively prime to 21493857.

Interesting facts

Basic properties

Name

Name twenty-one million four hundred ninety-three thousand eight hundred fifty-seven

Notation

Scientific notation 2.1493857 × 10^7
Engineering notation 2.1493857 × 10^6

Prime Factorization of 21493857

Prime Factorization 21 × 11 × 93047

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 21493857
Product of the distinct prime numbers

The prime factorization of 21493857 is 21 × 11 × 93047. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 21493857)

Multiplication

n×y
n×2 42987714
n×3 64481571
n×4 85975428
n×5 107469285

Division

n÷y
n÷2 10746928.5
n÷3 7164619
n÷3 5373464.25
n÷5 4298771.4

Exponentiation

ny
n2 461985888736449
n3 9.9298586285191E+21
n4 2.1343096139161E+29
n5 4.5874545635237E+36

Nth Root

y√n
2√n 4636.1467836987
3√n 278.03840281723
4√n 68.089256007822
5√n 29.272706006751

Divisors of 21493857

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21493856
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
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 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21493857 can be divided by 8 positive divisors. The sum of these divisors (counting 21493857) is 1, the average is 0.125.

Base conversion 21493857

Base System Value
2 Binary 1010001111111100001100001
3 Ternary 1111110000000210
4 Quaternary 1101333201201
5 Quinary 21000300412
6 Senary 2044404333
8 Octal 121774141
10 Decimal 21493857
12 Duodecimal 72466a9
16 Hexadecimal 147f861
20 Vigesimal 6e6ech
36 Base36 csorl

Cryptographic Hash Functions

md5 0629e7528f82b8222d6cf0a7aaf4eb26
sha1 801bac771c480275cac80158da8894cdb6cc91ec
sha256 ad67f8e428abf863de733aec9607a0dadf0516625b0336283cbd70239b1c300e
sha512 b086d6de3a05a9c0f3f83a7b4321d7aa1c7f9807d52eee32d2fc47d6838aae58506309d47ad9fce559f82330acb0887c2cd1a8a3347f2d6024062f91d6067855
ripemd-160 9e7f3aab6d19553ff5ddc6882eb31e218e28efa6

21493857 as geometric shapes

Circle

Radius = n
Diameter 42987714
Circumference 135049886.49702
Area 1.4513714741166E+15

Sphere

Radius = n
Volume 4.1594094558055E+22
Surface area 5.8054858964663E+15
Circumference 135049886.49702

Square

Length = n
Perimeter 85975428
Area 461985888736449
Diagonal 30396904.077108

Cube

Length = n
Surface area 2771915332418694
Volume 9.9298586285191E+21
Space diagonal 37228452.37462

Equilateral Triangle

Length = n
Perimeter 64481571
Area 2.0004575791785E+14
Altitude 18614226.18731

Triangular Pyramid

Length = n
Surface area 2.0004575791785E+14
Volume 1.1702450620749E+21
Height 10132301.359036