138721921 (number)

138721921 is an odd 9-digits composite number following 138721920 and preceding 138721922. In scientific notation, it is written as 1.38721921 × 10^8. The sum of its digits is 34. It has a total of 4 prime factors and 16 positive divisors. There are 118464768 positive integers (up to 138721921) that are relatively prime to 138721921.

Interesting facts

Basic properties

Name

Name one hundred thirty-eight million seven hundred twenty-one thousand nine hundred twenty-one

Notation

Scientific notation 1.38721921 × 10^8
Engineering notation 1.38721921 × 10^6

Prime Factorization of 138721921

Prime Factorization 13 × 17 × 59 × 10639

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 138721921
Product of the distinct prime numbers

The prime factorization of 138721921 is 13 × 17 × 59 × 10639. Since it has a total of 4 prime factors.

Most popular turbo-numbers

8, 8, 38, 72, 176, 54, 8556, 4924, 27898, 13803, 892704, 958189, 7185894, 5724423, 40226152, 98428279, 451571912, 813063353, 3817011798, 4207513782

Basic calculations (n = 138721921)

Multiplication

n×y
n×2 277443842
n×3 416165763
n×4 554887684
n×5 693609605

Division

n÷y
n÷2 69360960.5
n÷3 46240640.333333
n÷3 34680480.25
n÷5 27744384.2

Exponentiation

ny
n2 19243771365930241
n3 2.6695329311666E+24
n4 3.703227363842E+32
n5 5.1371881381192E+40

Nth Root

y√n
2√n 11778.027041912
3√n 517.66447789002
4√n 108.52661904764
5√n 42.503923265019

Divisors of 138721921

1, 13, 17, 59, 221, 767, 1003, 10639, 13039, 138307, 180863, 627701, 2351219, 8160113, 10670917, 138721921

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 -138721920
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 138721921 can be divided by 16 positive divisors. The sum of these divisors (counting 138721921) is 1, the average is 0.0625.

Base conversion 138721921

Base System Value
2 Binary 1000010001001011101010000001
3 Ternary 100200000210200221
4 Quaternary 20101023222001
5 Quinary 241003100141
6 Senary 21433143041
8 Octal 1021135201
10 Decimal 138721921
12 Duodecimal 3a55aa81
16 Hexadecimal 844ba81
20 Vigesimal 23704g1
36 Base36 2alaip

Cryptographic Hash Functions

md5 8f53f4df592a6c0d4a8ef2a2e5267320
sha1 9174b6e7f6c04083c7f4e980416a9566df9c49a7
sha256 33c224370a85f9ead8099c43144d2f23a22a4fd879b1145e9b27a5c5bf6d83c8
sha512 dc41212c7c8389710c0d171f32cde282d3eecfb1205e79209df0a532a64343c7673b43dfd0d9fd294b65866c20604264a7fea01f147143c86fe6459ec2352c8a
ripemd-160 93c451059315e95cae6c2d37a9c9f8cefca6f849

138721921 as geometric shapes

Circle

Radius = n
Diameter 277443842
Circumference 871615535.81093
Area 6.0456090750568E+16

Sphere

Radius = n
Volume 1.1182113393426E+25
Surface area 2.4182436300227E+17
Circumference 871615535.81093

Square

Length = n
Perimeter 554887684
Area 19243771365930241
Diagonal 196182422.07665

Cube

Length = n
Surface area 115462628195581446
Volume 2.6695329311666E+24
Space diagonal 240273415.29556

Equilateral Triangle

Length = n
Perimeter 416165763
Area 8.3327974337576E+15
Altitude 120136707.64778

Triangular Pyramid

Length = n
Surface area 8.3327974337576E+15
Volume 3.1460747303812E+23
Height 65394140.692216