21787993 (number)

21787993 is an odd 8-digits composite number following 21787992 and preceding 21787994. In scientific notation, it is written as 2.1787993 × 10^7. The sum of its digits is 46. It has a total of 2 prime factors and 4 positive divisors. There are 21616308 positive integers (up to 21787993) that are relatively prime to 21787993.

Interesting facts

Basic properties

Name

Name twenty-one million seven hundred eighty-seven thousand nine hundred ninety-three

Notation

Scientific notation 2.1787993 × 10^7
Engineering notation 2.1787993 × 10^6

Prime Factorization of 21787993

Prime Factorization 127 × 171559

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 21787993
Product of the distinct prime numbers

The prime factorization of 21787993 is 127 × 171559. Since it has a total of 2 prime factors.

Most popular turbo-numbers

8, 3, 69, 9, 285, 64, 6790, 4048, 76020, 80534, 680052, 885198, 7554408, 8878909, 63834177, 87305336, 253449099, 261832675, 1361700663, 2740082554

Basic calculations (n = 21787993)

Multiplication

n×y
n×2 43575986
n×3 65363979
n×4 87151972
n×5 108939965

Division

n÷y
n÷2 10893996.5
n÷3 7262664.3333333
n÷3 5446998.25
n÷5 4357598.6

Exponentiation

ny
n2 474716638968049
n3 1.0343122806819E+22
n4 2.2535588731312E+29
n5 4.9100524952871E+36

Nth Root

y√n
2√n 4667.7610264451
3√n 279.30094751331
4√n 68.321014530268
5√n 29.352388393769

Divisors of 21787993

1, 127, 171559, 21787993

4 divisors

τ Total Divisors 4
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21787992
Sum of the proper positive divisors of n
A Arithmetic Mean 0.25
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 4
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21787993 can be divided by 4 positive divisors. The sum of these divisors (counting 21787993) is 1, the average is 0.25.

Base conversion 21787993

Base System Value
2 Binary 1010011000111010101011001
3 Ternary 1111222221111201
4 Quaternary 1103013111121
5 Quinary 21034203433
6 Senary 2054554201
8 Octal 123072531
10 Decimal 21787993
12 Duodecimal 7368961
16 Hexadecimal 14c7559
20 Vigesimal 6g39jd
36 Base36 cyzq1

Cryptographic Hash Functions

md5 310ffa33a8fbfb47a4d7b47a1c1de129
sha1 c96f70ba4e7c3b15579a9802a1ecf91283c5bb6e
sha256 a01a711c7263a5104cee25e0b3f35f68e798bd18badcf1599be35ff95f1d8dbd
sha512 4587c9a22346885988aea7e886ede8ca0e0ba21cdbc910f11730957caa7074ac1c51312bd7e6aad536656cff503d50c2a7803cf5af21988ff43f617bfe4486b2
ripemd-160 c67feae719faeeb47a0675459b09bc11f0494e3d

21787993 as geometric shapes

Circle

Radius = n
Diameter 43575986
Circumference 136897997.49053
Area 1.4913663055189E+15

Sphere

Radius = n
Volume 4.3325171500108E+22
Surface area 5.9654652220754E+15
Circumference 136897997.49053

Square

Length = n
Perimeter 87151972
Area 474716638968049
Diagonal 30812875.19749

Cube

Length = n
Surface area 2848299833808294
Volume 1.0343122806819E+22
Space diagonal 37737910.870955

Equilateral Triangle

Length = n
Perimeter 65363979
Area 2.0555833447275E+14
Altitude 18868955.435478

Triangular Pyramid

Length = n
Surface area 2.0555833447275E+14
Volume 1.2189487125579E+21
Height 10270958.399163