81998980 (number)

81998980 is an even 8-digits composite number following 81998979 and preceding 81998981. In scientific notation, it is written as 8.1998980 × 10^7. The sum of its digits is 52. It has a total of 5 prime factors and 24 positive divisors. There are 28003968 positive integers (up to 81998980) that are relatively prime to 81998980.

Interesting facts

Basic properties

Name

Name eighty-one million nine hundred ninety-eight thousand nine hundred eighty

Notation

Scientific notation 8.1998980 × 10^7
Engineering notation 8.1998980 × 10^6

Prime Factorization of 81998980

Prime Factorization 2 × 2 × 35 × 293 × 1999

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 40999490
Product of the distinct prime numbers

The prime factorization of 81998980 is 2 × 2 × 35 × 293 × 1999. Since it has a total of 5 prime factors.

Most popular turbo-numbers

4, 9, 45, 70, 408, 98, 6620, 9020, 38041, 73830, 475991, 711399, 487664, 245708, 83471085, 76808444, 502168542, 287960268, 653922642, 8290842767

Basic calculations (n = 81998980)

Multiplication

n×y
n×2 163997960
n×3 245996940
n×4 327995920
n×5 409994900

Division

n÷y
n÷2 40999490
n÷3 27332993.333333
n÷3 20499745
n÷5 16399796

Exponentiation

ny
n2 6723832721040400
n3 5.5134742481594E+23
n4 4.5209926460534E+31
n5 3.7071678556388E+39

Nth Root

y√n
2√n 9055.328817884
3√n 434.44634719902
4√n 95.159491475543
5√n 38.261473390868

Divisors of 81998980

1, 2, 4, 35, 70, 140, 293, 586, 1172, 1999, 3998, 7996, 10255, 20510, 41020, 69965, 139930, 279860, 585707, 1171414, 2342828, 20499745, 40999490, 81998980

24 divisors

τ Total Divisors 24
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81998979
Sum of the proper positive divisors of n
A Arithmetic Mean 0.041666666666667
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 24
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81998980 can be divided by 24 positive divisors. The sum of these divisors (counting 81998980) is 1, the average is 0.041666666666667.

Base conversion 81998980

Base System Value
2 Binary 100111000110011010010000100
3 Ternary 12201021222110021
4 Quaternary 10320303102010
5 Quinary 131442431410
6 Senary 12045304524
8 Octal 470632204
10 Decimal 81998980
12 Duodecimal 23565144
16 Hexadecimal 4e33484
20 Vigesimal 15c9h90
36 Base36 1ctitg

Cryptographic Hash Functions

md5 3389c45099a2fca95e6615eacef55296
sha1 c36b2d6e6e5332a2c4273f2f94a99e7f65fdc5f5
sha256 8bb3e39532c8e9eca9f595638ba915083871c8b65b079621f3920cf83c245daf
sha512 a55a988d8603772888daff88f405019e3fd76c5ae3c14d18f54c7cdf0784d1bce2256edd996ed2ab8e7c4dbd9cf1728305abd20a7c107eac54cb49cb68643786
ripemd-160 48c7ed9417d1f69bcd9312ce15c555a2ce74914f

81998980 as geometric shapes

Circle

Radius = n
Diameter 163997960
Circumference 515214786.33971
Area 2.1123543480387E+16

Sphere

Radius = n
Volume 2.3094786925032E+24
Surface area 8.4494173921549E+16
Circumference 515214786.33971

Square

Length = n
Perimeter 327995920
Area 6723832721040400
Diagonal 115964069.61676

Cube

Length = n
Surface area 40342996326242400
Volume 5.5134742481594E+23
Space diagonal 142026399.52882

Equilateral Triangle

Length = n
Perimeter 245996940
Area 2.911504973609E+15
Altitude 71013199.764412

Triangular Pyramid

Length = n
Surface area 2.911504973609E+15
Volume 6.4976917146182E+22
Height 38654689.872253