28990905 (number)

28990905 is an odd 8-digits composite number following 28990904 and preceding 28990906. In scientific notation, it is written as 2.8990905 × 10^7. The sum of its digits is 42. It has a total of 4 prime factors and 16 positive divisors. There are 15433920 positive integers (up to 28990905) that are relatively prime to 28990905.

Interesting facts

Basic properties

Name

Name twenty-eight million nine hundred ninety thousand nine hundred five

Notation

Scientific notation 2.8990905 × 10^7
Engineering notation 2.8990905 × 10^6

Prime Factorization of 28990905

Prime Factorization 3 × 5 × 2797 × 691

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 28990905
Product of the distinct prime numbers

The prime factorization of 28990905 is 3 × 5 × 2797 × 691. Since it has a total of 4 prime factors.

Most popular turbo-numbers

8, 9, 66, 81, 757, 681, 3747, 7780, 26884, 320, 179139, 415285, 5387768, 674798, 69104618, 15755246, 863962843, 538461437, 6998241074, 2037800118

Basic calculations (n = 28990905)

Multiplication

n×y
n×2 57981810
n×3 86972715
n×4 115963620
n×5 144954525

Division

n÷y
n÷2 14495452.5
n÷3 9663635
n÷3 7247726.25
n÷5 5798181

Exponentiation

ny
n2 840472572719025
n3 2.4366060510803E+22
n4 7.0639414549294E+29
n5 2.0479005564542E+37

Nth Root

y√n
2√n 5384.3202913645
3√n 307.19956113965
4√n 73.377927821413
5√n 31.077949350665

Divisors of 28990905

1, 3, 5, 15, 691, 2073, 2797, 3455, 8391, 10365, 13985, 41955, 1932727, 5798181, 9663635, 28990905

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 -28990904
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 28990905 can be divided by 16 positive divisors. The sum of these divisors (counting 28990905) is 1, the average is 0.0625.

Base conversion 28990905

Base System Value
2 Binary 1101110100101110110111001
3 Ternary 2000112220001020
4 Quaternary 1232211312321
5 Quinary 24410202110
6 Senary 2513213053
8 Octal 156456671
10 Decimal 28990905
12 Duodecimal 9861189
16 Hexadecimal 1ba5db9
20 Vigesimal 913h55
36 Base36 h9dix

Cryptographic Hash Functions

md5 b9cb2167fd19fdb2f1585f1d66a9a814
sha1 b888b8f70220f4b658997489a87f0aed2bb447e3
sha256 682ecf64bd5e57352013cce8ca2e4c7f8cb2aba6b659f8a51527f57ce1ca36a0
sha512 87a49133db7bf9f6f11a30ec0e9fc67147ad6ba4c66b9f86c3a836cc2046a4c2d86d337dc6b32581da75912980914c96e0fcbaacc43d696fab38cde4a5f44cab
ripemd-160 46fd99da8baf1ef6f2212122899376a6e91738df

28990905 as geometric shapes

Circle

Radius = n
Diameter 57981810
Circumference 182155228.33784
Area 2.6404224599978E+15

Sphere

Radius = n
Volume 1.0206431559688E+23
Surface area 1.0561689839991E+16
Circumference 182155228.33784

Square

Length = n
Perimeter 115963620
Area 840472572719025
Diagonal 40999331.03647

Cube

Length = n
Surface area 5042835436314150
Volume 2.4366060510803E+22
Space diagonal 50213720.417403

Equilateral Triangle

Length = n
Perimeter 86972715
Area 3.6393529957937E+14
Altitude 25106860.208701

Triangular Pyramid

Length = n
Surface area 3.6393529957937E+14
Volume 2.8715677696651E+21
Height 13666443.678823