81494889 (number)

81494889 is an odd 8-digits composite number following 81494888 and preceding 81494890. In scientific notation, it is written as 8.1494889 × 10^7. The sum of its digits is 51. It has a total of 4 prime factors and 16 positive divisors. There are 43827840 positive integers (up to 81494889) that are relatively prime to 81494889.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1494889 × 10^7
Engineering notation 8.1494889 × 10^6

Prime Factorization of 81494889

Prime Factorization 3 × 119 × 7 × 32611

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81494889
Product of the distinct prime numbers

The prime factorization of 81494889 is 3 × 119 × 7 × 32611. Since it has a total of 4 prime factors.

Most popular turbo-numbers

5, 1, 39, 68, 773, 753, 9521, 1189, 220, 10882, 397125, 836796, 982795, 9715490, 32940986, 85745593, 27877397, 407821365, 1630531449, 9565701614

Basic calculations (n = 81494889)

Multiplication

n×y
n×2 162989778
n×3 244484667
n×4 325979556
n×5 407474445

Division

n÷y
n÷2 40747444.5
n÷3 27164963
n÷3 20373722.25
n÷5 16298977.8

Exponentiation

ny
n2 6641416933122321
n3 5.4124153576752E+23
n4 4.4108418879564E+31
n5 3.5946107005556E+39

Nth Root

y√n
2√n 9027.4519660866
3√n 433.55425966683
4√n 95.012904208252
5√n 38.214314590421

Divisors of 81494889

1, 3, 7, 21, 119, 357, 833, 2499, 32611, 97833, 228277, 684831, 3880709, 11642127, 27164963, 81494889

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 -81494888
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 81494889 can be divided by 16 positive divisors. The sum of these divisors (counting 81494889) is 1, the average is 0.0625.

Base conversion 81494889

Base System Value
2 Binary 100110110111000001101101001
3 Ternary 12200100100222020
4 Quaternary 10312320031221
5 Quinary 131330314024
6 Senary 12030415053
8 Octal 466701551
10 Decimal 81494889
12 Duodecimal 23361489
16 Hexadecimal 4db8369
20 Vigesimal 1596h49
36 Base36 1cipux

Cryptographic Hash Functions

md5 e76b4ef7648ee5d626221c4a0050232c
sha1 3cede2d20e9c6b17ebda3d42afdae9516b7b8f6f
sha256 935b674b3f8b6f82a10ead448f08d9c8d7af1c293cfa3bbee7a50f3e5d013ba7
sha512 567fcabd18da8dd4de33f327ab41133f9206bebb5c8478725caebd38719de694ca79a5e9ef6bdf5fedb47577865990e6c26cc3728273d05d3f9d4c0e45c35269
ripemd-160 2ad1c23958580eb970e145084dab1d7c553faab2

81494889 as geometric shapes

Circle

Radius = n
Diameter 162989778
Circumference 512047489.17503
Area 2.0864626646524E+16

Sphere

Radius = n
Volume 2.2671472434465E+24
Surface area 8.3458506586096E+16
Circumference 512047489.17503

Square

Length = n
Perimeter 325979556
Area 6641416933122321
Diagonal 115251177.28789

Cube

Length = n
Surface area 39848501598733926
Volume 5.4124153576752E+23
Space diagonal 141153288.30519

Equilateral Triangle

Length = n
Perimeter 244484667
Area 2.875817890604E+15
Altitude 70576644.152593

Triangular Pyramid

Length = n
Surface area 2.875817890604E+15
Volume 6.3785926700173E+22
Height 38417059.095963