81489691 (number)

81489691 is an odd 8-digits prime number following 81489690 and preceding 81489692. In scientific notation, it is written as 8.1489691 × 10^7. The sum of its digits is 46. It has a total of 1 prime factors and 2 positive divisors. There are 81489690 positive integers (up to 81489691) that are relatively prime to 81489691.

Interesting facts

Basic properties

Name

Name eighty-one million four hundred eighty-nine thousand six hundred ninety-one

Notation

Scientific notation 8.1489691 × 10^7
Engineering notation 8.1489691 × 10^6

Prime Factorization of 81489691

Prime Factorization 81489691

Composite number
ω Distinct Factors 1
Total number of distinct prime factors
Ω Total Factors 1
Total number of prime factors
rad Radical 81489691
Product of the distinct prime numbers

The prime factorization of 81489691 is 81489691. Since it has a total of 1 prime factors.

Most popular turbo-numbers

5, 8, 84, 15, 522, 829, 4042, 6308, 34357, 87885, 933902, 701337, 6015461, 4678953, 73626822, 25159971, 753213844, 866983143, 1015854040, 542419642

Basic calculations (n = 81489691)

Multiplication

n×y
n×2 162979382
n×3 244469073
n×4 325958764
n×5 407448455

Division

n÷y
n÷2 40744845.5
n÷3 27163230.333333
n÷3 20372422.75
n÷5 16297938.2

Exponentiation

ny
n2 6640569739275481
n3 5.4113797611751E+23
n4 4.4097166462181E+31
n5 3.5934644689787E+39

Nth Root

y√n
2√n 9027.1640618746
3√n 433.54504165334
4√n 95.011389116645
5√n 38.213827092179

Divisors of 81489691

1, 81489691

2 divisors

τ Total Divisors 2
Total number of the positive divisors of n
σ Sum of Divisors 81489692
Sum of all the positive divisors of n
s Aliquot Sum 1
Sum of the proper positive divisors of n
A Arithmetic Mean 40744846
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 9027.164117263
Returns the nth root of the product of n divisors
H Harmonic Mean 1.999999975457
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81489691 can be divided by 2 positive divisors. The sum of these divisors (counting 81489691) is 81489692, the average is 40744846.

Base conversion 81489691

Base System Value
2 Binary 100110110110110111100011011
3 Ternary 12200100002211201
4 Quaternary 10312312330123
5 Quinary 131330132231
6 Senary 12030335031
8 Octal 466667433
10 Decimal 81489691
12 Duodecimal 2335a477
16 Hexadecimal 4db6f1b
20 Vigesimal 159644b
36 Base36 1ciluj

Cryptographic Hash Functions

md5 fc75dacc7eeaaacfc09f976b7a926c89
sha1 ea6cb01587de9f5fb9be131634c990bf45340ceb
sha256 45ef7fc4ca6e9f0b7b84380d7ee3b0b401e0bf943daa918f5d52518123eeffba
sha512 ef37ef1477b399f82a61e39c10d5cc6d13d38feb357e7a51ba09025a58d8e2c9ab57ae305236fe173c3295c580cd8470f78e61671cfe82d5e79d47577a36b40f
ripemd-160 c7f97bc39f340682efafa988b9c9d4bbaab3d164

81489691 as geometric shapes

Circle

Radius = n
Diameter 162979382
Circumference 512014829.1778
Area 2.0861965108559E+16

Sphere

Radius = n
Volume 2.266713453799E+24
Surface area 8.3447860434234E+16
Circumference 512014829.1778

Square

Length = n
Perimeter 325958764
Area 6640569739275481
Diagonal 115243826.20579

Cube

Length = n
Surface area 39843418435652886
Volume 5.4113797611751E+23
Space diagonal 141144285.10509

Equilateral Triangle

Length = n
Perimeter 244469073
Area 2.8754510449074E+15
Altitude 70572142.552544

Triangular Pyramid

Length = n
Surface area 2.8754510449074E+15
Volume 6.3773722078376E+22
Height 38414608.735264