81874890 (number)

81874890 is an even 8-digits composite number following 81874889 and preceding 81874891. In scientific notation, it is written as 8.1874890 × 10^7. The sum of its digits is 45. It has a total of 5 prime factors and 32 positive divisors. There are 20178432 positive integers (up to 81874890) that are relatively prime to 81874890.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1874890 × 10^7
Engineering notation 8.1874890 × 10^6

Prime Factorization of 81874890

Prime Factorization 2 × 45 × 17 × 59 × 907

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 81874890
Product of the distinct prime numbers

The prime factorization of 81874890 is 2 × 45 × 17 × 59 × 907. Since it has a total of 5 prime factors.

Most popular turbo-numbers

7, 6, 33, 71, 56, 863, 102, 7551, 16964, 77157, 917995, 452026, 7133370, 7711327, 29564748, 35305960, 105800694, 434743679, 8956328481, 3036943687

Basic calculations (n = 81874890)

Multiplication

n×y
n×2 163749780
n×3 245624670
n×4 327499560
n×5 409374450

Division

n÷y
n÷2 40937445
n÷3 27291630
n÷3 20468722.5
n÷5 16374978

Exponentiation

ny
n2 6703497612512100
n3 5.4884812963969E+23
n4 4.4936880240955E+31
n5 3.6792021266714E+39

Nth Root

y√n
2√n 9048.4744570563
3√n 434.22708567266
4√n 95.123469538575
5√n 38.249886069061

Divisors of 81874890

1, 2, 17, 34, 45, 59, 90, 118, 765, 907, 1003, 1530, 1814, 2006, 2655, 5310, 15419, 30838, 40815, 45135, 53513, 81630, 90270, 107026, 693855, 909721, 1387710, 1819442, 2408085, 4816170, 40937445, 81874890

32 divisors

τ Total Divisors 32
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81874889
Sum of the proper positive divisors of n
A Arithmetic Mean 0.03125
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 32
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81874890 can be divided by 32 positive divisors. The sum of these divisors (counting 81874890) is 1, the average is 0.03125.

Base conversion 81874890

Base System Value
2 Binary 100111000010100111111001010
3 Ternary 12201001200020100
4 Quaternary 10320110333022
5 Quinary 131424444030
6 Senary 12042510230
8 Octal 470247712
10 Decimal 81874890
12 Duodecimal 23505376
16 Hexadecimal 4e14fca
20 Vigesimal 15be74a
36 Base36 1cqv2i

Cryptographic Hash Functions

md5 9589d178c6cbceb2c3270d049b9792c1
sha1 a806128aca94df7290ac3548ef6ee12b03312f94
sha256 4b5a5ab062eca9c7ded52f7d3a206a53467f542e87d1d3e6c4e46c8d51684db4
sha512 060e1aec8c603b2ab431a207381d9c5fe4fe7e250ce223d9d73add95221756af722773d2ec3d0a4c9c111f5d44826aa760b1f919d95d71adc9fdf777a8f9ace5
ripemd-160 a6776f1622bc87564f72c5830eddc58a38b277ae

81874890 as geometric shapes

Circle

Radius = n
Diameter 163749780
Circumference 514435105.87494
Area 2.1059658852825E+16

Sphere

Radius = n
Volume 2.2990096693501E+24
Surface area 8.4238635411299E+16
Circumference 514435105.87494

Square

Length = n
Perimeter 327499560
Area 6703497612512100
Diagonal 115788579.85581

Cube

Length = n
Surface area 40220985675072600
Volume 5.4884812963969E+23
Space diagonal 141811469.34411

Equilateral Triangle

Length = n
Perimeter 245624670
Area 2.9026996133219E+15
Altitude 70905734.672056

Triangular Pyramid

Length = n
Surface area 2.9026996133219E+15
Volume 6.4682372384963E+22
Height 38596193.285268