15661388 (number)

15661388 is an even 8-digits composite number following 15661387 and preceding 15661389. In scientific notation, it is written as 1.5661388 × 10^7. The sum of its digits is 38. It has a total of 4 prime factors and 12 positive divisors. There are 7815840 positive integers (up to 15661388) that are relatively prime to 15661388.

Interesting facts

Basic properties

Name

Name fifteen million six hundred sixty-one thousand three hundred eighty-eight

Notation

Scientific notation 1.5661388 × 10^7
Engineering notation 1.5661388 × 10^6

Prime Factorization of 15661388

Prime Factorization 2 × 2 × 571 × 6857

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 7830694
Product of the distinct prime numbers

The prime factorization of 15661388 is 2 × 2 × 571 × 6857. Since it has a total of 4 prime factors.

Most popular turbo-numbers

4, 6, 82, 28, 533, 830, 7202, 7719, 82520, 7952, 661421, 680615, 2656163, 1658922, 56388212, 91538313, 88829832, 515023443, 6509555735, 7079335088

Basic calculations (n = 15661388)

Multiplication

n×y
n×2 31322776
n×3 46984164
n×4 62645552
n×5 78306940

Division

n÷y
n÷2 7830694
n÷3 5220462.6666667
n÷3 3915347
n÷5 3132277.6

Exponentiation

ny
n2 245279074086544
n3 3.8414107475501E+21
n4 6.0161824184752E+28
n5 9.4221767134519E+35

Nth Root

y√n
2√n 3957.4471569435
3√n 250.19391887632
4√n 62.908243950562
5√n 27.476793498017

Divisors of 15661388

1, 2, 4, 571, 1142, 2284, 6857, 13714, 27428, 3915347, 7830694, 15661388

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 -15661387
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 15661388 can be divided by 12 positive divisors. The sum of these divisors (counting 15661388) is 1, the average is 0.083333333333333.

Base conversion 15661388

Base System Value
2 Binary 111011101111100101001100
3 Ternary 1002110200101102
4 Quaternary 323233211030
5 Quinary 13002131023
6 Senary 1315402232
8 Octal 73574514
10 Decimal 15661388
12 Duodecimal 52b3378
16 Hexadecimal eef94c
20 Vigesimal 4hhd98
36 Base36 9boek

Cryptographic Hash Functions

md5 2385a4fbd227c1611c524b50ecd592dc
sha1 9b2d819eef01c09bc1ff34d5fa31df4b037d98c4
sha256 46705aa3ee14bad0d71822f450454805d972733934fe24f67dffd3d52d863831
sha512 5a2011f889f122b9380a383ccb997f5892d8d0556c7ef66a233d084c282f70ed5ab6e0617532956f53d554b8d84e13d4eb89d92f46e3ac1740ed353cae267e67
ripemd-160 fbb74b36454ef40a0f0ad0486bbf56d1e52fce36

15661388 as geometric shapes

Circle

Radius = n
Diameter 31322776
Circumference 98403402.971639
Area 7.7056693722959E+14

Sphere

Radius = n
Volume 1.6090863711899E+22
Surface area 3.0822677489184E+15
Circumference 98403402.971639

Square

Length = n
Perimeter 62645552
Area 245279074086544
Diagonal 22148547.315187

Cube

Length = n
Surface area 1471674444519264
Volume 3.8414107475501E+21
Space diagonal 27126319.73305

Equilateral Triangle

Length = n
Perimeter 46984164
Area 1.0620895458784E+14
Altitude 13563159.866525

Triangular Pyramid

Length = n
Surface area 1.0620895458784E+14
Volume 4.5271459815259E+20
Height 7382849.1050624