161645690 (number)

161645690 is an even 9-digits composite number following 161645689 and preceding 161645691. In scientific notation, it is written as 1.61645690 × 10^8. The sum of its digits is 38. It has a total of 4 prime factors and 16 positive divisors. There are 59557120 positive integers (up to 161645690) that are relatively prime to 161645690.

Interesting facts

Basic properties

Name

Name one hundred sixty-one million six hundred forty-five thousand six hundred ninety

Notation

Scientific notation 1.61645690 × 10^8
Engineering notation 1.61645690 × 10^6

Prime Factorization of 161645690

Prime Factorization 2 × 85 × 47 × 20231

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 161645690
Product of the distinct prime numbers

The prime factorization of 161645690 is 2 × 85 × 47 × 20231. Since it has a total of 4 prime factors.

Most popular turbo-numbers

7, 10, 39, 79, 952, 54, 9560, 2973, 64456, 97084, 800921, 62732, 9019017, 5423125, 1201910, 73719725, 508681410, 985449241, 386544395, 6792540857

Basic calculations (n = 161645690)

Multiplication

n×y
n×2 323291380
n×3 484937070
n×4 646582760
n×5 808228450

Division

n÷y
n÷2 80822845
n÷3 53881896.666667
n÷3 40411422.5
n÷5 32329138

Exponentiation

ny
n2 26129329095576100
n3 4.2236934308915E+24
n4 6.8274183898492E+32
n5 1.1036227565459E+41

Nth Root

y√n
2√n 12713.995831366
3√n 544.73846554268
4√n 112.7563560575
5√n 43.824081833807

Divisors of 161645690

1, 2, 47, 85, 94, 170, 3995, 7990, 20231, 40462, 950857, 1719635, 1901714, 3439270, 80822845, 161645690

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -161645689
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 161645690 can be divided by 16 positive divisors. The sum of these divisors (counting 161645690) is 1, the average is 0.0625.

Base conversion 161645690

Base System Value
2 Binary 1001101000101000010001111010
3 Ternary 102021011110012102
4 Quaternary 21220220101322
5 Quinary 312340130230
6 Senary 24012343402
8 Octal 1150502172
10 Decimal 161645690
12 Duodecimal 46174b62
16 Hexadecimal 9a2847a
20 Vigesimal 2aa5e4a
36 Base36 2o8mm2

Cryptographic Hash Functions

md5 5681a7a13bbf4fe18104c456483a9994
sha1 e484f1c031acc1a5426c254f1ce64e4645919c1f
sha256 9d26515c39a02ddcc47377a75c256b2d7b1128a5b0db4ef61c1a51d9b6afd684
sha512 54941f1dbaa588ca9283c29b6ea38497170bbd634f14f72202f2b6a792468a655d91a6c25238ad1e6ce0ec6643a81b016c2a4bbb5c34cdd660d1b8e1c9f4d7a9
ripemd-160 44132eb27c488add0e19feadbf2e5437b02d7b8a

161645690 as geometric shapes

Circle

Radius = n
Diameter 323291380
Circumference 1015649824.3769
Area 8.2087708329892E+16

Sphere

Radius = n
Volume 1.7692165671339E+25
Surface area 3.2835083331957E+17
Circumference 1015649824.3769

Square

Length = n
Perimeter 646582760
Area 26129329095576100
Diagonal 228601527.09716

Cube

Length = n
Surface area 156775974573456600
Volume 4.2236934308915E+24
Space diagonal 279978547.90453

Equilateral Triangle

Length = n
Perimeter 484937070
Area 1.1314331390306E+16
Altitude 139989273.95226

Triangular Pyramid

Length = n
Surface area 1.1314331390306E+16
Volume 4.9776704443941E+23
Height 76200509.032386