721668081 (number)

721668081 is an odd 9-digits composite number following 721668080 and preceding 721668082. In scientific notation, it is written as 7.21668081 × 10^8. The sum of its digits is 39. It has a total of 4 prime factors and 16 positive divisors. There are 472912128 positive integers (up to 721668081) that are relatively prime to 721668081.

Interesting facts

Basic properties

Name

Name seven hundred twenty-one million six hundred sixty-eight thousand eighty-one

Notation

Scientific notation 7.21668081 × 10^8
Engineering notation 7.21668081 × 10^6

Prime Factorization of 721668081

Prime Factorization 3 × 229 × 79 × 13297

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 721668081
Product of the distinct prime numbers

The prime factorization of 721668081 is 3 × 229 × 79 × 13297. Since it has a total of 4 prime factors.

Most popular turbo-numbers

10, 5, 74, 86, 629, 109, 1418, 4160, 43770, 90886, 542710, 407325, 2155712, 2679045, 11791405, 56057249, 373152590, 665324797, 6895642250, 1265862626

Basic calculations (n = 721668081)

Multiplication

n×y
n×2 1443336162
n×3 2165004243
n×4 2886672324
n×5 3608340405

Division

n÷y
n÷2 360834040.5
n÷3 240556027
n÷3 180417020.25
n÷5 144333616.2

Exponentiation

ny
n2 520804819134222561
n3 3.7584821440015E+26
n4 2.7123765963343E+35
n5 1.9574356132259E+44

Nth Root

y√n
2√n 26863.880602028
3√n 896.97257714673
4√n 163.90204575303
5√n 59.110890148504

Divisors of 721668081

1, 3, 79, 229, 237, 687, 13297, 18091, 39891, 54273, 1050463, 3045013, 3151389, 9135039, 240556027, 721668081

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 -721668080
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 721668081 can be divided by 16 positive divisors. The sum of these divisors (counting 721668081) is 1, the average is 0.0625.

Base conversion 721668081

Base System Value
2 Binary 101011000000111100011111110001
3 Ternary 1212021221112111110
4 Quaternary 223000330133301
5 Quinary 2434221334311
6 Senary 155335503533
8 Octal 5300743761
10 Decimal 721668081
12 Duodecimal 181827ba9
16 Hexadecimal 2b03c7f1
20 Vigesimal b5a8a41
36 Base36 bxnunl

Cryptographic Hash Functions

md5 810562b964591035416bd67d149554fa
sha1 33e448259c5fb9b6480a3fdfd410af5294321b69
sha256 3dead38f36f44cd79cf73539741cf09de7261a7e886b73bdab47a5d89cb89a64
sha512 a10e94c332383783a9277a14aae04d37626cb757b0e3555d6dbfcb28289bb01d543cf2733fb16f2dde0c42df1e0a9f8a31b304088d3b7e44369c754c866d0507
ripemd-160 74ddd4f6e3efae07f4be50d2b500b267faa67aa6

721668081 as geometric shapes

Circle

Radius = n
Diameter 1443336162
Circumference 4534374283.1997
Area 1.6361565937462E+18

Sphere

Radius = n
Volume 1.5743493189658E+27
Surface area 6.5446263749849E+18
Circumference 4534374283.1997

Square

Length = n
Perimeter 2886672324
Area 520804819134222561
Diagonal 1020592787.682

Cube

Length = n
Surface area 3124828914805335366
Volume 3.7584821440015E+26
Space diagonal 1249965782.4927

Equilateral Triangle

Length = n
Perimeter 2165004243
Area 2.255151018918E+17
Altitude 624982891.24637

Triangular Pyramid

Length = n
Surface area 2.255151018918E+17
Volume 4.4294136849866E+25
Height 340197595.89399