15661985 (number)

15661985 is an odd 8-digits composite number following 15661984 and preceding 15661986. In scientific notation, it is written as 1.5661985 × 10^7. The sum of its digits is 41. It has a total of 4 prime factors and 12 positive divisors. There are 11868768 positive integers (up to 15661985) that are relatively prime to 15661985.

Interesting facts

Basic properties

Name

Name fifteen million six hundred sixty-one thousand nine hundred eighty-five

Notation

Scientific notation 1.5661985 × 10^7
Engineering notation 1.5661985 × 10^6

Prime Factorization of 15661985

Prime Factorization 5 × 19 × 19 × 8677

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 824315
Product of the distinct prime numbers

The prime factorization of 15661985 is 5 × 19 × 19 × 8677. Since it has a total of 4 prime factors.

Most popular turbo-numbers

3, 6, 86, 12, 498, 414, 9419, 8863, 40332, 75588, 390215, 714349, 566383, 6363789, 84915773, 15815509, 68361355, 784591180, 4610328012, 3699396014

Basic calculations (n = 15661985)

Multiplication

n×y
n×2 31323970
n×3 46985955
n×4 62647940
n×5 78309925

Division

n÷y
n÷2 7830992.5
n÷3 5220661.6666667
n÷3 3915496.25
n÷5 3132397

Exponentiation

ny
n2 245297774140225
n3 3.8418500591176E+21
n4 6.0170997998149E+28
n5 9.4239726808204E+35

Nth Root

y√n
2√n 3957.5225836374
3√n 250.19709790216
4√n 62.908843445396
5√n 27.477002973647

Divisors of 15661985

1, 5, 19, 95, 361, 1805, 8677, 43385, 164863, 824315, 3132397, 15661985

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 -15661984
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 15661985 can be divided by 12 positive divisors. The sum of these divisors (counting 15661985) is 1, the average is 0.083333333333333.

Base conversion 15661985

Base System Value
2 Binary 111011101111101110100001
3 Ternary 1002110201012112
4 Quaternary 323233232201
5 Quinary 13002140420
6 Senary 1315405105
8 Octal 73575641
10 Decimal 15661985
12 Duodecimal 52b3795
16 Hexadecimal eefba1
20 Vigesimal 4hhej5
36 Base36 9bov5

Cryptographic Hash Functions

md5 438dbb1254c8e227d73179853474b629
sha1 65ab385f92dcb531df933c841312b1941b2679e6
sha256 325f4d538774e9211ffc4eb9681d98ee22f22d49bba6586a2396381f223f81de
sha512 39c5754c7c03599bb935c5238b76b74d7847cb6cba30b47f60fb524c4aa0b1704d5f43f672f7bb9bf03607cbc1e511e2d1f95a655269b80d84d1879349ff28c5
ripemd-160 56fd146171ab0658aa06fb286c7e6518e0a10ba4

15661985 as geometric shapes

Circle

Radius = n
Diameter 31323970
Circumference 98407154.033267
Area 7.7062568518086E+14

Sphere

Radius = n
Volume 1.609270389589E+22
Surface area 3.0825027407234E+15
Circumference 98407154.033267

Square

Length = n
Perimeter 62647940
Area 245297774140225
Diagonal 22149391.600684

Cube

Length = n
Surface area 1471786644841350
Volume 3.8418500591176E+21
Space diagonal 27127353.767382

Equilateral Triangle

Length = n
Perimeter 46985955
Area 1.0621705194861E+14
Altitude 13563676.883691

Triangular Pyramid

Length = n
Surface area 1.0621705194861E+14
Volume 4.5276637151733E+20
Height 7383130.5335613