68638991 (number)

68638991 is an odd 8-digits composite number following 68638990 and preceding 68638992. In scientific notation, it is written as 6.8638991 × 10^7. The sum of its digits is 50. It has a total of 2 prime factors and 4 positive divisors. There are 66424800 positive integers (up to 68638991) that are relatively prime to 68638991.

Interesting facts

Basic properties

Name

Name sixty-eight million six hundred thirty-eight thousand nine hundred ninety-one

Notation

Scientific notation 6.8638991 × 10^7
Engineering notation 6.8638991 × 10^6

Prime Factorization of 68638991

Prime Factorization 31 × 2214161

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 68638991
Product of the distinct prime numbers

The prime factorization of 68638991 is 31 × 2214161. Since it has a total of 2 prime factors.

Most popular turbo-numbers

6, 9, 74, 87, 898, 393, 8040, 4869, 76777, 92956, 192573, 522715, 3797521, 1609891, 42324788, 96737500, 285541727, 494896191, 4651446404, 6999365775

Basic calculations (n = 68638991)

Multiplication

n×y
n×2 137277982
n×3 205916973
n×4 274555964
n×5 343194955

Division

n÷y
n÷2 34319495.5
n÷3 22879663.666667
n÷3 17159747.75
n÷5 13727798.2

Exponentiation

ny
n2 4711311085498081
n3 3.233796391957E+23
n4 2.2196452144337E+31
n5 1.5235420789671E+39

Nth Root

y√n
2√n 8284.8651769356
3√n 409.4400267389
4√n 91.021234758355
5√n 36.924462162234

Divisors of 68638991

1, 31, 2214161, 68638991

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 -68638990
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 68638991 can be divided by 4 positive divisors. The sum of these divisors (counting 68638991) is 1, the average is 0.25.

Base conversion 68638991

Base System Value
2 Binary 100000101110101100100001111
3 Ternary 11210011012222212
4 Quaternary 10011311210033
5 Quinary 120032421431
6 Senary 10451101035
8 Octal 405654417
10 Decimal 68638991
12 Duodecimal 1aba177b
16 Hexadecimal 417590f
20 Vigesimal 118jh9b
36 Base36 14v66n

Cryptographic Hash Functions

md5 21796ce071484392bc322ff8f121a5e4
sha1 474be2777aaa08bbf094276328a875ecd7cb0176
sha256 0d626a1ac4b77aa21023f691c94d55fa79a401f939e0c8251493bf3ed8e3529d
sha512 fe050ac16b45cdd28515b22b0184354c89002afe27fab0c7a8dd7f0f6704e7b712b94abf5ad7c7b41b9683e7c988d8e701a4840868b8446563b3efd2ff5398d9
ripemd-160 fb0b8a7306435f7cd85b2ba26ecab1e36d0544be

68638991 as geometric shapes

Circle

Radius = n
Diameter 137277982
Circumference 431271499.75083
Area 1.4801020294977E+16

Sphere

Radius = n
Volume 1.3545694650903E+24
Surface area 5.9204081179908E+16
Circumference 431271499.75083

Square

Length = n
Perimeter 274555964
Area 4711311085498081
Diagonal 97070191.979805

Cube

Length = n
Surface area 28267866512988486
Volume 3.233796391957E+23
Space diagonal 118886219.79226

Equilateral Triangle

Length = n
Perimeter 205916973
Area 2.0400575425863E+15
Altitude 59443109.896131

Triangular Pyramid

Length = n
Surface area 2.0400575425863E+15
Volume 3.8110655962157E+22
Height 32356730.659935