256987409 (number)

256987409 is an odd 9-digits composite number following 256987408 and preceding 256987410. In scientific notation, it is written as 2.56987409 × 10^8. The sum of its digits is 50. It has a total of 2 prime factors and 4 positive divisors. There are 220274880 positive integers (up to 256987409) that are relatively prime to 256987409.

Interesting facts

Basic properties

Name

Name two hundred fifty-six million nine hundred eighty-seven thousand four hundred nine

Notation

Scientific notation 2.56987409 × 10^8
Engineering notation 2.56987409 × 10^6

Prime Factorization of 256987409

Prime Factorization 49 × 5244641

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 256987409
Product of the distinct prime numbers

The prime factorization of 256987409 is 49 × 5244641. Since it has a total of 2 prime factors.

Most popular turbo-numbers

8, 9, 94, 94, 185, 923, 8519, 2899, 11453, 60572, 670319, 640536, 1519126, 2633716, 18679616, 73564883, 867930183, 538420404, 5042799219, 535955699

Basic calculations (n = 256987409)

Multiplication

n×y
n×2 513974818
n×3 770962227
n×4 1027949636
n×5 1284937045

Division

n÷y
n÷2 128493704.5
n÷3 85662469.666667
n÷3 64246852.25
n÷5 51397481.8

Exponentiation

ny
n2 66042528384533281
n3 1.697209825335E+25
n4 4.3616155554219E+33
n5 1.120880280642E+42

Nth Root

y√n
2√n 16030.826834571
3√n 635.77573494651
4√n 126.61290153286
5√n 48.081982843803

Divisors of 256987409

1, 49, 5244641, 256987409

4 divisors

τ Total Divisors 4
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -256987408
Sum of the proper positive divisors of n
A Arithmetic Mean 0.25
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 4
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 256987409 can be divided by 4 positive divisors. The sum of these divisors (counting 256987409) is 1, the average is 0.25.

Base conversion 256987409

Base System Value
2 Binary 1111010100010101000100010001
3 Ternary 122220120022110012
4 Quaternary 33110111010101
5 Quinary 1011242044114
6 Senary 41300044305
8 Octal 1724250421
10 Decimal 256987409
12 Duodecimal 72093695
16 Hexadecimal f515111
20 Vigesimal 40638a9
36 Base36 4904r5

Cryptographic Hash Functions

md5 687fbf118fc98ed8bfa679ac517c80c3
sha1 476632e06093836e2a55dc4a6e9c2dcf57f7cdc2
sha256 f0a4d66d8f38f5f6663b0c478e4d0e6baf328153fab1e247acd8876f9336a5df
sha512 a9f45bf6bd3e88bd8f430d892eb93c22caaa45c64ce4ef7068a774da9be5045a1311b57796a55ca777362417607bd73b355ccc2db44ad1066e1c5c6e74d43c13
ripemd-160 cb1140c34c8a0485766fec74aadcc9bc3bac63a9

256987409 as geometric shapes

Circle

Radius = n
Diameter 513974818
Circumference 1614699512.359
Area 2.0747872199735E+17

Sphere

Radius = n
Volume 7.1092558918305E+25
Surface area 8.2991488798938E+17
Circumference 1614699512.359

Square

Length = n
Perimeter 1027949636
Area 66042528384533281
Diagonal 363435079.16692

Cube

Length = n
Surface area 396255170307199686
Volume 1.697209825335E+25
Space diagonal 445115249.29348

Equilateral Triangle

Length = n
Perimeter 770962227
Area 2.859725365558E+16
Altitude 222557624.64674

Triangular Pyramid

Length = n
Surface area 2.859725365558E+16
Volume 2.0001809609847E+24
Height 121145026.38897