81694890 (number)

81694890 is an even 8-digits composite number following 81694889 and preceding 81694891. In scientific notation, it is written as 8.1694890 × 10^7. The sum of its digits is 45. It has a total of 5 prime factors and 32 positive divisors. There are 21195648 positive integers (up to 81694890) that are relatively prime to 81694890.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1694890 × 10^7
Engineering notation 8.1694890 × 10^6

Prime Factorization of 81694890

Prime Factorization 2 × 15 × 3 × 37 × 24533

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 81694890
Product of the distinct prime numbers

The prime factorization of 81694890 is 2 × 15 × 3 × 37 × 24533. Since it has a total of 5 prime factors.

Most popular turbo-numbers

1, 1, 54, 15, 484, 392, 2948, 9426, 66308, 47143, 655380, 655160, 8018780, 2523405, 35364241, 66180197, 856748789, 89860402, 9073486782, 9810414662

Basic calculations (n = 81694890)

Multiplication

n×y
n×2 163389780
n×3 245084670
n×4 326779560
n×5 408474450

Division

n÷y
n÷2 40847445
n÷3 27231630
n÷3 20423722.5
n÷5 16338978

Exponentiation

ny
n2 6674055052112100
n3 5.4523619333624E+23
n4 4.4543010838623E+31
n5 3.6389363707301E+39

Nth Root

y√n
2√n 9038.5225562588
3√n 433.90863955014
4√n 95.071144708891
5√n 38.233052966563

Divisors of 81694890

1, 2, 3, 6, 15, 30, 37, 45, 74, 90, 111, 222, 555, 1110, 1665, 3330, 24533, 49066, 73599, 147198, 367995, 735990, 907721, 1103985, 1815442, 2207970, 2723163, 5446326, 13615815, 27231630, 40847445, 81694890

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 -81694889
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 81694890 can be divided by 32 positive divisors. The sum of these divisors (counting 81694890) is 1, the average is 0.03125.

Base conversion 81694890

Base System Value
2 Binary 100110111101001000010101010
3 Ternary 12200201112022200
4 Quaternary 10313221002222
5 Quinary 131403214030
6 Senary 12035001030
8 Octal 467510252
10 Decimal 81694890
12 Duodecimal 23439176
16 Hexadecimal 4de90aa
20 Vigesimal 15abh4a
36 Base36 1cn06i

Cryptographic Hash Functions

md5 5280ab84cdd1cf3af6f56045458aebab
sha1 820d1b2ab802c4170735cbcbe7767fb632a05da1
sha256 0f0053580c2fbd1b05c411acbcbc12b91d0ac2f24a05d0cd94f829323790ae37
sha512 74513a583b2e57734a832d7e684ef55e1a486f7d9538e69e67e3271c819b2b11275f732428199ef10c92497594273acb3bb1d366af5efa0aa025847f9bb756c2
ripemd-160 4274e20c3dc1694a18e1cceab1066108ca6bae15

81694890 as geometric shapes

Circle

Radius = n
Diameter 163389780
Circumference 513304132.51965
Area 2.0967162321369E+16

Sphere

Radius = n
Volume 2.2838800259419E+24
Surface area 8.3868649285477E+16
Circumference 513304132.51965

Square

Length = n
Perimeter 326779560
Area 6674055052112100
Diagonal 115534021.41458

Cube

Length = n
Surface area 40044330312672600
Volume 5.4523619333624E+23
Space diagonal 141499700.19875

Equilateral Triangle

Length = n
Perimeter 245084670
Area 2.8899506106925E+15
Altitude 70749850.099375

Triangular Pyramid

Length = n
Surface area 2.8899506106925E+15
Volume 6.4256701609399E+22
Height 38511340.471526