161749 (number)

161749 is an odd 6-digits composite number following 161748 and preceding 161750. In scientific notation, it is written as 1.61749 × 10^5. The sum of its digits is 28. It has a total of 3 prime factors and 6 positive divisors. There are 138600 positive integers (up to 161749) that are relatively prime to 161749.

Interesting facts

Basic properties

Name

Name one hundred sixty-one thousand seven hundred forty-nine

Notation

Scientific notation 1.61749 × 10^5
Engineering notation 1.61749 × 10^3

Prime Factorization of 161749

Prime Factorization 7 × 7 × 3301

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 23107
Product of the distinct prime numbers

The prime factorization of 161749 is 7 × 7 × 3301. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 161749)

Multiplication

n×y
n×2 323498
n×3 485247
n×4 646996
n×5 808745

Division

n÷y
n÷2 80874.5
n÷3 53916.333333333
n÷3 40437.25
n÷5 32349.8

Exponentiation

ny
n2 26162739001
n3 4231796870672749
n4 6.8448891203445E+20
n5 1.1071539703266E+26

Nth Root

y√n
2√n 402.18030782225
3√n 54.485449079521
4√n 20.054433620081
5√n 11.009518380927

Divisors of 161749

6 divisors

τ Total Divisors 6
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -161748
Sum of the proper positive divisors of n
A Arithmetic Mean 0.16666666666667
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 6
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 161749 can be divided by 6 positive divisors. The sum of these divisors (counting 161749) is 1, the average is 0.16666666666667.

Base conversion 161749

Base System Value
2 Binary 100111011111010101
3 Ternary 22012212201
4 Quaternary 213133111
5 Quinary 20133444
6 Senary 3244501
8 Octal 473725
10 Decimal 161749
12 Duodecimal 79731
16 Hexadecimal 277d5
20 Vigesimal 10479
36 Base36 3gt1

Cryptographic Hash Functions

md5 e20c5bc959897eb5d313680d49f197d7
sha1 64b12f7538239e7e63320f2c54d1933a4162f2df
sha256 fe9d69c73e88124084322f55cfbc131472b87a94a296015352af64442ccc712b
sha512 16c493abd9762a44de8bca53ff47c3738f66844b5c42d367841dc88312410b07eb3e842ed9eaa637dc61c97eb08c171c7fae92b3a2ed75cc19d37c56364df417
ripemd-160 86e2fb53a406151dc36a9585bef01b1424d56a30

161749 as geometric shapes

Circle

Radius = n
Diameter 323498
Circumference 1016298.940251
Area 82192668643.329

Sphere

Radius = n
Volume 1.772610928052E+16
Surface area 328770674573.32
Circumference 1016298.940251

Square

Length = n
Perimeter 646996
Area 26162739001
Diagonal 228747.62950029

Cube

Length = n
Surface area 156976434006
Volume 4231796870672749
Space diagonal 280157.48607346

Equilateral Triangle

Length = n
Perimeter 485247
Area 11328798303.724
Altitude 140078.74303673

Triangular Pyramid

Length = n
Surface area 11328798303.724
Volume 4.9872204397612E+14
Height 76249.209833429