728021281 (number)

728021281 is an odd 9-digits composite number following 728021280 and preceding 728021282. In scientific notation, it is written as 7.28021281 × 10^8. The sum of its digits is 31. It has a total of 3 prime factors and 8 positive divisors. There are 671488272 positive integers (up to 728021281) that are relatively prime to 728021281.

Interesting facts

Basic properties

Name

Name seven hundred twenty-eight million twenty-one thousand two hundred eighty-one

Notation

Scientific notation 7.28021281 × 10^8
Engineering notation 7.28021281 × 10^6

Prime Factorization of 728021281

Prime Factorization 13 × 1303 × 42979

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 728021281
Product of the distinct prime numbers

The prime factorization of 728021281 is 13 × 1303 × 42979. Since it has a total of 3 prime factors.

Most popular turbo-numbers

9, 8, 19, 86, 892, 778, 9671, 1358, 87383, 36045, 975181, 15215, 3587848, 9954421, 5597191, 1665769, 615153672, 757744627, 605788790, 6498897282

Basic calculations (n = 728021281)

Multiplication

n×y
n×2 1456042562
n×3 2184063843
n×4 2912085124
n×5 3640106405

Division

n÷y
n÷2 364010640.5
n÷3 242673760.33333
n÷3 182005320.25
n÷5 145604256.2

Exponentiation

ny
n2 530014985588880961
n3 3.8586218875761E+26
n4 2.8091588494878E+35
n5 2.0451274241366E+44

Nth Root

y√n
2√n 26981.86948675
3√n 899.5970546008
4√n 164.26158859195
5√n 59.214602041118

Divisors of 728021281

1, 13, 1303, 16939, 42979, 558727, 56001637, 728021281

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 -728021280
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 728021281 can be divided by 8 positive divisors. The sum of these divisors (counting 728021281) is 1, the average is 0.125.

Base conversion 728021281

Base System Value
2 Binary 101011011001001011100100100001
3 Ternary 1212201220022110011
4 Quaternary 223121023210201
5 Quinary 2442333140111
6 Senary 200124004521
8 Octal 5331134441
10 Decimal 728021281
12 Duodecimal 183990741
16 Hexadecimal 2b64b921
20 Vigesimal b7a2d41
36 Base36 c1g0td

Cryptographic Hash Functions

md5 5c5cd64deefb7d3e74d9f8cd68c94dee
sha1 3c19bd276e2cbd733d70f1439df25b69782a5dc5
sha256 25d84ae3e572e8e580e4768d213f57e242e6623f72547b0dc83bc05bd82057ae
sha512 53290e81531b34dbce924d89e3f23e34aa497efe21bbe1e60ee73ced3e1bc8429d3eebdc538841376ef9dc2fbc4b97f69eac072d524cb95a27eee790935b477a
ripemd-160 67ba829efe30c5082c276014c5c5e1cc278a3ccb

728021281 as geometric shapes

Circle

Radius = n
Diameter 1456042562
Circumference 4574292616.0933
Area 1.6650911850185E+18

Sphere

Radius = n
Volume 1.6162957566653E+27
Surface area 6.6603647400741E+18
Circumference 4574292616.0933

Square

Length = n
Perimeter 2912085124
Area 530014985588880961
Diagonal 1029577569.2864

Cube

Length = n
Surface area 3180089913533285766
Volume 3.8586218875761E+26
Space diagonal 1260969847.6834

Equilateral Triangle

Length = n
Perimeter 2184063843
Area 2.2950322095321E+17
Altitude 630484923.84169

Triangular Pyramid

Length = n
Surface area 2.2950322095321E+17
Volume 4.5474295045665E+25
Height 343192523.09548