1288397721 (number)

1288397721 is an odd 10-digits composite number following 1288397720 and preceding 1288397722. In scientific notation, it is written as 1.288397721 × 10^9. The sum of its digits is 48. It has a total of 4 prime factors and 16 positive divisors. There are 791059776 positive integers (up to 1288397721) that are relatively prime to 1288397721.

Interesting facts

Basic properties

Name

Name one billion two hundred eighty-eight million three hundred ninety-seven thousand seven hundred twenty-one

Notation

Scientific notation 1.288397721 × 10^9
Engineering notation 1.288397721 × 10^9

Prime Factorization of 1288397721

Prime Factorization 3 × 13 × 443 × 74573

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 1288397721
Product of the distinct prime numbers

The prime factorization of 1288397721 is 3 × 13 × 443 × 74573. Since it has a total of 4 prime factors.

Most popular turbo-numbers

8, 5, 31, 25, 321, 27, 3856, 8916, 19499, 86808, 224270, 567465, 8704398, 4792528, 11050926, 52236176, 563193804, 689782257, 614909810, 4819935711

Basic calculations (n = 1288397721)

Multiplication

n×y
n×2 2576795442
n×3 3865193163
n×4 5153590884
n×5 6441988605

Division

n÷y
n÷2 644198860.5
n÷3 429465907
n÷3 322099430.25
n÷5 257679544.2

Exponentiation

ny
n2 1659968687477993841
n3 2.138699873878E+27
n4 2.7554960434074E+36
n5 3.5501748225506E+45

Nth Root

y√n
2√n 35894.257493365
3√n 1088.1363437593
4√n 189.4577987135
5√n 66.375833791375

Divisors of 1288397721

1, 3, 13, 39, 443, 1329, 5759, 17277, 74573, 223719, 969449, 2908347, 33035839, 99107517, 429465907, 1288397721

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 -1288397720
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 1288397721 can be divided by 16 positive divisors. The sum of these divisors (counting 1288397721) is 1, the average is 0.0625.

Base conversion 1288397721

Base System Value
2 Binary 1001100110010110110001110011001
3 Ternary 10022210100101102010
4 Quaternary 1030302312032121
5 Quinary 10114312211341
6 Senary 331502500133
8 Octal 11462661631
10 Decimal 1288397721
12 Duodecimal 2bb594649
16 Hexadecimal 4ccb6399
20 Vigesimal 102c9e61
36 Base36 lb2u1l

Cryptographic Hash Functions

md5 7bfcf5d08bbc7d398dc5220e6f8c6837
sha1 cf15629fbad5de72ce1085de142c4a3b5f202477
sha256 3d376f73cea22be5e8ae01d4f563ced44d9b940fdfbe1cf1c3ba84a8b37dba81
sha512 507423a57ec5ad17c8a0bd6c3d6d97753175e3fd2c9c283b2181c3bfde492c27536170ef5823043431a158096ac57bb078ce9a3031264faaea832216bca2a5f2
ripemd-160 1b4f1d9be34ac22927cbc17e242647522bdd6b61

1288397721 as geometric shapes

Circle

Radius = n
Diameter 2576795442
Circumference 8095241630.3909
Area 5.21494543377E+18

Sphere

Radius = n
Volume 8.9585650826781E+27
Surface area 2.085978173508E+19
Circumference 8095241630.3909

Square

Length = n
Perimeter 5153590884
Area 1659968687477993841
Diagonal 1822069530.7688

Cube

Length = n
Surface area 9.959812124868E+18
Volume 2.138699873878E+27
Space diagonal 2231570313.128

Equilateral Triangle

Length = n
Perimeter 3865193163
Area 7.1878752642133E+17
Altitude 1115785156.564

Triangular Pyramid

Length = n
Surface area 7.1878752642133E+17
Volume 2.5204819729033E+26
Height 607356510.25626