215687921 (number)

215687921 is an odd 9-digits composite number following 215687920 and preceding 215687922. In scientific notation, it is written as 2.15687921 × 10^8. The sum of its digits is 41. It has a total of 2 prime factors and 4 positive divisors. There are 210427200 positive integers (up to 215687921) that are relatively prime to 215687921.

Interesting facts

Basic properties

Name

Name two hundred fifteen million six hundred eighty-seven thousand nine hundred twenty-one

Notation

Scientific notation 2.15687921 × 10^8
Engineering notation 2.15687921 × 10^6

Prime Factorization of 215687921

Prime Factorization 41 × 5260681

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 215687921
Product of the distinct prime numbers

The prime factorization of 215687921 is 41 × 5260681. Since it has a total of 2 prime factors.

Most popular turbo-numbers

4, 6, 29, 72, 791, 427, 290, 7393, 83257, 72147, 161775, 526708, 5540092, 9256157, 78572946, 33290082, 870466897, 375444999, 4253097029, 6283601186

Basic calculations (n = 215687921)

Multiplication

n×y
n×2 431375842
n×3 647063763
n×4 862751684
n×5 1078439605

Division

n÷y
n÷2 107843960.5
n÷3 71895973.666667
n÷3 53921980.25
n÷5 43137584.2

Exponentiation

ny
n2 46521279265302241
n3 1.0034078006993E+25
n4 2.1642294244802E+33
n5 4.6679814513317E+41

Nth Root

y√n
2√n 14686.3174758
3√n 599.71089868605
4√n 121.18711761487
5√n 46.426416676077

Divisors of 215687921

1, 41, 5260681, 215687921

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 -215687920
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 215687921 can be divided by 4 positive divisors. The sum of these divisors (counting 215687921) is 1, the average is 0.25.

Base conversion 215687921

Base System Value
2 Binary 1100110110110010001011110001
3 Ternary 120000212002012112
4 Quaternary 30312302023301
5 Quinary 420204003141
6 Senary 33222535105
8 Octal 1466621361
10 Decimal 215687921
12 Duodecimal 60297495
16 Hexadecimal cdb22f1
20 Vigesimal 3780jg1
36 Base36 3kexv5

Cryptographic Hash Functions

md5 22403606fff0a031316b6e1e6adb7cea
sha1 d7139aa29865c7200f9644aeb5d92b6bffd1af7f
sha256 c6b4138ac4cf3d1da785800f8ac2a94bc4f00f17acd5437b2cc0baef35bcf521
sha512 7031d55d05d26ebed74357018dbcba3a93cf5fff6fefbd98e3b2c77032a7bc95ecc3fbcdb2dab116e3d55ebbf95b5174b579f55188c08025e30e10fa1d1ff97f
ripemd-160 141f6a3251ff864d231b035fcd9a80ebecb9e1de

215687921 as geometric shapes

Circle

Radius = n
Diameter 431375842
Circumference 1355207176.1633
Area 1.4615090917547E+17

Sphere

Radius = n
Volume 4.2030647669757E+25
Surface area 5.8460363670189E+17
Circumference 1355207176.1633

Square

Length = n
Perimeter 862751684
Area 46521279265302241
Diagonal 305028783.11826

Cube

Length = n
Surface area 279127675591813446
Volume 1.0034078006993E+25
Space diagonal 373582437.7509

Equilateral Triangle

Length = n
Perimeter 647063763
Area 2.0144304830151E+16
Altitude 186791218.87545

Triangular Pyramid

Length = n
Surface area 2.0144304830151E+16
Volume 1.1825274336166E+24
Height 101676261.03942