81489402 (number)

81489402 is an even 8-digits composite number following 81489401 and preceding 81489403. In scientific notation, it is written as 8.1489402 × 10^7. The sum of its digits is 36. It has a total of 4 prime factors and 16 positive divisors. There are 27086400 positive integers (up to 81489402) that are relatively prime to 81489402.

Interesting facts

Basic properties

Name

Name eighty-one million four hundred eighty-nine thousand four hundred two

Notation

Scientific notation 8.1489402 × 10^7
Engineering notation 8.1489402 × 10^6

Prime Factorization of 81489402

Prime Factorization 2 × 81 × 661 × 761

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81489402
Product of the distinct prime numbers

The prime factorization of 81489402 is 2 × 81 × 661 × 761. Since it has a total of 4 prime factors.

Most popular turbo-numbers

2, 3, 42, 1, 942, 924, 8542, 3205, 7197, 57520, 206523, 639240, 4692854, 4858456, 40088951, 46361025, 508625775, 823866685, 9617717931, 6341251547

Basic calculations (n = 81489402)

Multiplication

n×y
n×2 162978804
n×3 244468206
n×4 325957608
n×5 407447010

Division

n÷y
n÷2 40744701
n÷3 27163134
n÷3 20372350.5
n÷5 16297880.4

Exponentiation

ny
n2 6640522638317604
n3 5.4113221876396E+23
n4 4.4096540910009E+31
n5 3.5934007490251E+39

Nth Root

y√n
2√n 9027.1480546184
3√n 433.54452913589
4√n 95.01130487799
5√n 38.213799987372

Divisors of 81489402

1, 2, 81, 162, 661, 761, 1322, 1522, 53541, 61641, 107082, 123282, 503021, 1006042, 40744701, 81489402

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 -81489401
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 81489402 can be divided by 16 positive divisors. The sum of these divisors (counting 81489402) is 1, the average is 0.0625.

Base conversion 81489402

Base System Value
2 Binary 100110110110110110111111010
3 Ternary 12200100002110000
4 Quaternary 10312312313322
5 Quinary 131330130102
6 Senary 12030333430
8 Octal 466666772
10 Decimal 81489402
12 Duodecimal 2335a276
16 Hexadecimal 4db6dfa
20 Vigesimal 15963a2
36 Base36 1cilmi

Cryptographic Hash Functions

md5 0a46b5137adffbad05a0cbf8256931dc
sha1 3f31d0def05797941a734e80199264ddbf800cd0
sha256 2e69e866e577183882a6313a514ca172e4bc5ef12b2a2d16568b88f8aba0f09e
sha512 61db4b7c26779373d9208a341a5a504673dec7e7752a441df78484e52bab32b84d35c09b911c7c271d3891f43976f2193b05e20c4623779a5e2d272184db61f9
ripemd-160 6705955cb1bd2e7690a45d7e444b37f87265b738

81489402 as geometric shapes

Circle

Radius = n
Diameter 162978804
Circumference 512013013.33725
Area 2.0861817136535E+16

Sphere

Radius = n
Volume 2.2666893374528E+24
Surface area 8.3447268546141E+16
Circumference 512013013.33725

Square

Length = n
Perimeter 325957608
Area 6640522638317604
Diagonal 115243417.49807

Cube

Length = n
Surface area 39843135829905624
Volume 5.4113221876396E+23
Space diagonal 141143784.5424

Equilateral Triangle

Length = n
Perimeter 244468206
Area 2.8754306495944E+15
Altitude 70571892.271202

Triangular Pyramid

Length = n
Surface area 2.8754306495944E+15
Volume 6.3773043567754E+22
Height 38414472.499358