81904025 (number)

81904025 is an odd 8-digits composite number following 81904024 and preceding 81904026. In scientific notation, it is written as 8.1904025 × 10^7. The sum of its digits is 29. It has a total of 4 prime factors and 16 positive divisors. There are 55978560 positive integers (up to 81904025) that are relatively prime to 81904025.

Interesting facts

Basic properties

Name

Name eighty-one million nine hundred four thousand twenty-five

Notation

Scientific notation 8.1904025 × 10^7
Engineering notation 8.1904025 × 10^6

Prime Factorization of 81904025

Prime Factorization 25 × 7 × 419 × 1117

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81904025
Product of the distinct prime numbers

The prime factorization of 81904025 is 25 × 7 × 419 × 1117. Since it has a total of 4 prime factors.

Most popular turbo-numbers

2, 8, 99, 15, 659, 649, 3713, 900, 84811, 40411, 969081, 515023, 9233513, 2735661, 91317662, 39961876, 19378381, 291262777, 3418353692, 4157034359

Basic calculations (n = 81904025)

Multiplication

n×y
n×2 163808050
n×3 245712075
n×4 327616100
n×5 409520125

Division

n÷y
n÷2 40952012.5
n÷3 27301341.666667
n÷3 20476006.25
n÷5 16380805

Exponentiation

ny
n2 6708269311200625
n3 5.4943425737131E+23
n4 4.5000877151596E+31
n5 3.6857529672463E+39

Nth Root

y√n
2√n 9050.0842537515
3√n 434.27858581637
4√n 95.131930779058
5√n 38.252607909274

Divisors of 81904025

1, 7, 25, 175, 419, 1117, 2933, 7819, 10475, 27925, 73325, 195475, 468023, 3276161, 11700575, 81904025

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 -81904024
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 81904025 can be divided by 16 positive divisors. The sum of these divisors (counting 81904025) is 1, the average is 0.0625.

Base conversion 81904025

Base System Value
2 Binary 100111000011100000110011001
3 Ternary 12201010011012102
4 Quaternary 10320130012121
5 Quinary 131431412100
6 Senary 12043253145
8 Octal 470340631
10 Decimal 81904025
12 Duodecimal 2351a1b5
16 Hexadecimal 4e1c199
20 Vigesimal 15bi015
36 Base36 1crhjt

Cryptographic Hash Functions

md5 6c610d5425257f0b0b03d23fc56a8f49
sha1 064c9fb125d2f1939b2a361dc14cd622a341606d
sha256 3cf760a0063ffc0f57c729cda6c925e20fddee6dbbe3dc88383ba68a988228db
sha512 ea92c07d0e86253abb7f7151ab7ec731151f9e0a86ca5198252dd722a7a1ed55054b1fb8e3e9166fe1266efe64b903e865d95a31fcb46df111a00457ea0b7a31
ripemd-160 a46de5026cc149ce4f075500a69c870cfea57d0f

81904025 as geometric shapes

Circle

Radius = n
Diameter 163808050
Circumference 514618166.47887
Area 2.107464958637E+16

Sphere

Radius = n
Volume 2.301464835451E+24
Surface area 8.4298598345479E+16
Circumference 514618166.47887

Square

Length = n
Perimeter 327616100
Area 6708269311200625
Diagonal 115829782.96795

Cube

Length = n
Surface area 40249615867203750
Volume 5.4943425737131E+23
Space diagonal 141861932.64439

Equilateral Triangle

Length = n
Perimeter 245712075
Area 2.9047658194636E+15
Altitude 70930966.322196

Triangular Pyramid

Length = n
Surface area 2.9047658194636E+15
Volume 6.4751448200575E+22
Height 38609927.655982