21251388 (number)

21251388 is an even 8-digits composite number following 21251387 and preceding 21251389. In scientific notation, it is written as 2.1251388 × 10^7. The sum of its digits is 30. It has a total of 4 prime factors and 12 positive divisors. There are 7083792 positive integers (up to 21251388) that are relatively prime to 21251388.

Interesting facts

Basic properties

Name

Name twenty-one million two hundred fifty-one thousand three hundred eighty-eight

Notation

Scientific notation 2.1251388 × 10^7
Engineering notation 2.1251388 × 10^6

Prime Factorization of 21251388

Prime Factorization 2 × 2 × 3 × 1770949

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 10625694
Product of the distinct prime numbers

The prime factorization of 21251388 is 2 × 2 × 3 × 1770949. Since it has a total of 4 prime factors.

Most popular turbo-numbers

2, 5, 69, 43, 744, 247, 1224, 4808, 82911, 60425, 589625, 359299, 4295929, 1755995, 58274115, 94887643, 664683699, 693944244, 7505228678, 2811194835

Basic calculations (n = 21251388)

Multiplication

n×y
n×2 42502776
n×3 63754164
n×4 85005552
n×5 106256940

Division

n÷y
n÷2 10625694
n÷3 7083796
n÷3 5312847
n÷5 4250277.6

Exponentiation

ny
n2 451621491926544
n3 9.5975835540699E+21
n4 2.0396197196996E+29
n5 4.3344750035787E+36

Nth Root

y√n
2√n 4609.9227759259
3√n 276.98894333047
4√n 67.896412099064
5√n 29.20636175218

Divisors of 21251388

1, 2, 3, 4, 6, 12, 1770949, 3541898, 5312847, 7083796, 10625694, 21251388

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21251387
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21251388 can be divided by 12 positive divisors. The sum of these divisors (counting 21251388) is 1, the average is 0.083333333333333.

Base conversion 21251388

Base System Value
2 Binary 1010001000100010100111100
3 Ternary 1110222200102110
4 Quaternary 1101010110330
5 Quinary 20420021023
6 Senary 2035254020
8 Octal 121042474
10 Decimal 21251388
12 Duodecimal 714a310
16 Hexadecimal 144453c
20 Vigesimal 6cg898
36 Base36 cnhoc

Cryptographic Hash Functions

md5 98cce598b98e8745115dc9852106e943
sha1 7d6be7b60d62d4c6f0a9288b3c66023c0973f849
sha256 b83cfaf14f95664619812e777278c5f74ec7bc8ce31080e1c689542e4dfbd157
sha512 cdd345f0dd172753342bc0deb301bd93640ef888ab88246fed5de51da95aacd6005161fd85456a45302738a0f6ae21c63ff49bb93923e89fcbaf5659ca3b8944
ripemd-160 673f2929b44c27974950574f581833b735bea4a6

21251388 as geometric shapes

Circle

Radius = n
Diameter 42502776
Circumference 133526408.83877
Area 1.4188107612397E+15

Sphere

Radius = n
Volume 4.0202263980907E+22
Surface area 5.6752430449588E+15
Circumference 133526408.83877

Square

Length = n
Perimeter 85005552
Area 451621491926544
Diagonal 30054001.128853

Cube

Length = n
Surface area 2709728951559264
Volume 9.5975835540699E+21
Space diagonal 36808483.74736

Equilateral Triangle

Length = n
Perimeter 63754164
Area 1.9555784245171E+14
Altitude 18404241.87368

Triangular Pyramid

Length = n
Surface area 1.9555784245171E+14
Volume 1.1310860690145E+21
Height 10018000.376284