81369904 (number)

81369904 is an even 8-digits composite number following 81369903 and preceding 81369905. In scientific notation, it is written as 8.1369904 × 10^7. The sum of its digits is 40. It has a total of 7 prime factors and 40 positive divisors. There are 31702080 positive integers (up to 81369904) that are relatively prime to 81369904.

Interesting facts

Basic properties

Name

Name eighty-one million three hundred sixty-nine thousand nine hundred four

Notation

Scientific notation 8.1369904 × 10^7
Engineering notation 8.1369904 × 10^6

Prime Factorization of 81369904

Prime Factorization 2 × 2 × 2 × 2 × 7 × 11 × 66047

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 10171238
Product of the distinct prime numbers

The prime factorization of 81369904 is 2 × 2 × 2 × 2 × 7 × 11 × 66047. Since it has a total of 7 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81369904)

Multiplication

n×y
n×2 162739808
n×3 244109712
n×4 325479616
n×5 406849520

Division

n÷y
n÷2 40684952
n÷3 27123301.333333
n÷3 20342476
n÷5 16273980.8

Exponentiation

ny
n2 6621061276969216
n3 5.387551204851E+23
n4 4.3838452433381E+31
n5 3.5671306660128E+39

Nth Root

y√n
2√n 9020.526813884
3√n 433.33250545535
4√n 94.976453997209
5√n 38.202585882295

Divisors of 81369904

40 divisors

τ Total Divisors 40
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81369903
Sum of the proper positive divisors of n
A Arithmetic Mean 0.025
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 40
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81369904 can be divided by 40 positive divisors. The sum of these divisors (counting 81369904) is 1, the average is 0.025.

Base conversion 81369904

Base System Value
2 Binary 100110110011001101100110000
3 Ternary 12200010000112011
4 Quaternary 10312121230300
5 Quinary 131312314104
6 Senary 12024012304
8 Octal 466315460
10 Decimal 81369904
12 Duodecimal 23301094
16 Hexadecimal 4d99b30
20 Vigesimal 158b4f4
36 Base36 1cg1f4

Cryptographic Hash Functions

md5 c2e31b87bb71996aca6f50feaa675010
sha1 87f8c19518b1847d6cd27438300c681a22c5a4fa
sha256 908e1a09b1590d2246155b10b7e3edfdbf4cba37e59aad7f9def5fde3ffdea3f
sha512 b4d3e9d590262931e7fbe61b9a3a7a083577bc8a824e8d9bbabbb288d9a38662b3151c2563eb0a410b12dcfc66965c3d1994a033222ca427f5105eecd1d2ad21
ripemd-160 ff84e506758bc354bca3d1fcc9f18644efa78fec

81369904 as geometric shapes

Circle

Radius = n
Diameter 162739808
Circumference 511262185.25941
Area 2.0800677466694E+16

Sphere

Radius = n
Volume 2.2567321714665E+24
Surface area 8.3202709866777E+16
Circumference 511262185.25941

Square

Length = n
Perimeter 325479616
Area 6621061276969216
Diagonal 115074421.8058

Cube

Length = n
Surface area 39726367661815296
Volume 5.387551204851E+23
Space diagonal 140936807.935

Equilateral Triangle

Length = n
Perimeter 244109712
Area 2.8670036329344E+15
Altitude 70468403.967501

Triangular Pyramid

Length = n
Surface area 2.8670036329344E+15
Volume 6.3492899848999E+22
Height 38358140.601932