81998937 (number)

81998937 is an odd 8-digits composite number following 81998936 and preceding 81998938. In scientific notation, it is written as 8.1998937 × 10^7. The sum of its digits is 54. It has a total of 4 prime factors and 16 positive divisors. There are 52250400 positive integers (up to 81998937) that are relatively prime to 81998937.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1998937 × 10^7
Engineering notation 8.1998937 × 10^6

Prime Factorization of 81998937

Prime Factorization 9 × 31 × 83 × 3541

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81998937
Product of the distinct prime numbers

The prime factorization of 81998937 is 9 × 31 × 83 × 3541. Since it has a total of 4 prime factors.

Most popular turbo-numbers

7, 4, 97, 26, 517, 974, 1017, 3700, 68537, 90810, 288980, 99543, 4127641, 4594251, 9627786, 79083140, 875977460, 137879389, 4317927674, 4105918167

Basic calculations (n = 81998937)

Multiplication

n×y
n×2 163997874
n×3 245996811
n×4 327995748
n×5 409994685

Division

n÷y
n÷2 40999468.5
n÷3 27332979
n÷3 20499734.25
n÷5 16399787.4

Exponentiation

ny
n2 6723825669129969
n3 5.5134655744197E+23
n4 4.5209831628851E+31
n5 3.7071581355148E+39

Nth Root

y√n
2√n 9055.3264435911
3√n 434.44627125825
4√n 95.159479000208
5√n 38.261469378029

Divisors of 81998937

1, 9, 31, 83, 279, 747, 2573, 3541, 23157, 31869, 109771, 293903, 987939, 2645127, 9110993, 81998937

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 -81998936
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 81998937 can be divided by 16 positive divisors. The sum of these divisors (counting 81998937) is 1, the average is 0.0625.

Base conversion 81998937

Base System Value
2 Binary 100111000110011010001011001
3 Ternary 12201021222101200
4 Quaternary 10320303101121
5 Quinary 131442431222
6 Senary 12045304413
8 Octal 470632131
10 Decimal 81998937
12 Duodecimal 23565109
16 Hexadecimal 4e33459
20 Vigesimal 15c9h6h
36 Base36 1ctis9

Cryptographic Hash Functions

md5 49ee348c15bd9f05d0e9aee44a4bd4bc
sha1 99890f86f29835f0f626356bd17d2344f533d0e6
sha256 a36436bc034dd44c94587270d2fa7623dda4c47c332b4c4d7115964826f63665
sha512 0c4b226243b17c041c79918d4fd7b13bb7441e829eb9293cdc2c24276a8cabf808fd8f7736206b659f50a5070c68fcc252df1b263e2d137a34abb1d6456fdfe3
ripemd-160 9e61202118fe3b6f50f4a2f943e74f2599e70f9d

81998937 as geometric shapes

Circle

Radius = n
Diameter 163997874
Circumference 515214516.16274
Area 2.1123521326157E+16

Sphere

Radius = n
Volume 2.3094750592556E+24
Surface area 8.4494085304629E+16
Circumference 515214516.16274

Square

Length = n
Perimeter 327995748
Area 6723825669129969
Diagonal 115964008.80558

Cube

Length = n
Surface area 40342954014779814
Volume 5.5134655744197E+23
Space diagonal 142026325.05064

Equilateral Triangle

Length = n
Perimeter 245996811
Area 2.9115019200422E+15
Altitude 71013162.52532

Triangular Pyramid

Length = n
Surface area 2.9115019200422E+15
Volume 6.4976814925179E+22
Height 38654669.601859