28777721 (number)

28777721 is an odd 8-digits composite number following 28777720 and preceding 28777722. In scientific notation, it is written as 2.8777721 × 10^7. The sum of its digits is 41. It has a total of 3 prime factors and 8 positive divisors. There are 24642288 positive integers (up to 28777721) that are relatively prime to 28777721.

Interesting facts

Basic properties

Name

Name twenty-eight million seven hundred seventy-seven thousand seven hundred twenty-one

Notation

Scientific notation 2.8777721 × 10^7
Engineering notation 2.8777721 × 10^6

Prime Factorization of 28777721

Prime Factorization 7 × 1987 × 2069

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 28777721
Product of the distinct prime numbers

The prime factorization of 28777721 is 7 × 1987 × 2069. Since it has a total of 3 prime factors.

Most popular turbo-numbers

2, 2, 67, 23, 711, 579, 4861, 6294, 73659, 85121, 715073, 356078, 2933518, 765967, 41593359, 15997285, 872558230, 720753447, 9356578952, 661647345

Basic calculations (n = 28777721)

Multiplication

n×y
n×2 57555442
n×3 86333163
n×4 115110884
n×5 143888605

Division

n÷y
n÷2 14388860.5
n÷3 9592573.6666667
n÷3 7194430.25
n÷5 5755544.2

Exponentiation

ny
n2 828157225953841
n3 2.3832477592634E+22
n4 6.8584439089956E+29
n5 1.9737038530723E+37

Nth Root

y√n
2√n 5364.4870211419
3√n 306.44471271641
4√n 73.242658479481
5√n 31.032108107387

Divisors of 28777721

1, 7, 1987, 2069, 13909, 14483, 4111103, 28777721

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -28777720
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
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 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 28777721 can be divided by 8 positive divisors. The sum of these divisors (counting 28777721) is 1, the average is 0.125.

Base conversion 28777721

Base System Value
2 Binary 1101101110001110011111001
3 Ternary 2000011001121112
4 Quaternary 1231301303321
5 Quinary 24331341341
6 Senary 2504450105
8 Octal 155616371
10 Decimal 28777721
12 Duodecimal 9779935
16 Hexadecimal 1b71cf9
20 Vigesimal 8jh461
36 Base36 h4t15

Cryptographic Hash Functions

md5 d56c8b91151942b1c781712fc4a21c3a
sha1 aac51130345c6b9dcf7dc6e3f5a687de7104b7e1
sha256 331be68767543722d79c8f5d44bf683e6da98a51243abe20fd5b9f957dc84843
sha512 196156b2425918c6b2021420b11d25d3d1c140b2abdeeba56e67ca8b39844833da706d1da826503a734bcc61475e5d12e9b779e39beda92a25b1c454c9133aac
ripemd-160 83e0ead609b4f8232ef0fe50b0bcc9f4d0a3a8dd

28777721 as geometric shapes

Circle

Radius = n
Diameter 57555442
Circumference 180815753.76131
Area 2.6017326570739E+15

Sphere

Radius = n
Volume 9.9829248695815E+22
Surface area 1.0406930628296E+16
Circumference 180815753.76131

Square

Length = n
Perimeter 115110884
Area 828157225953841
Diagonal 40697843.332389

Cube

Length = n
Surface area 4968943355723046
Volume 2.3832477592634E+22
Space diagonal 49844474.898042

Equilateral Triangle

Length = n
Perimeter 86333163
Area 3.5860259800184E+14
Altitude 24922237.449021

Triangular Pyramid

Length = n
Surface area 3.5860259800184E+14
Volume 2.8086844197046E+21
Height 13565947.777463