15721993 (number)

15721993 is an odd 8-digits composite number following 15721992 and preceding 15721994. In scientific notation, it is written as 1.5721993 × 10^7. The sum of its digits is 37. It has a total of 4 prime factors and 12 positive divisors. There are 13428072 positive integers (up to 15721993) that are relatively prime to 15721993.

Interesting facts

Basic properties

Name

Name fifteen million seven hundred twenty-one thousand nine hundred ninety-three

Notation

Scientific notation 1.5721993 × 10^7
Engineering notation 1.5721993 × 10^6

Prime Factorization of 15721993

Prime Factorization 7 × 7 × 499 × 643

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 2245999
Product of the distinct prime numbers

The prime factorization of 15721993 is 7 × 7 × 499 × 643. Since it has a total of 4 prime factors.

Most popular turbo-numbers

5, 10, 98, 67, 330, 918, 5129, 548, 89456, 65338, 85089, 85888, 1504017, 1049963, 97236055, 86854440, 824704414, 972159352, 4279484966, 9160551904

Basic calculations (n = 15721993)

Multiplication

n×y
n×2 31443986
n×3 47165979
n×4 62887972
n×5 78609965

Division

n÷y
n÷2 7860996.5
n÷3 5240664.3333333
n÷3 3930498.25
n÷5 3144398.6

Exponentiation

ny
n2 247181063892049
n3 3.8861789562433E+21
n4 6.1098478346805E+28
n5 9.6058984887912E+35

Nth Root

y√n
2√n 3965.0968462321
3√n 250.51622929554
4√n 62.969014969524
5√n 27.4980260919

Divisors of 15721993

1, 7, 49, 499, 643, 3493, 4501, 24451, 31507, 320857, 2245999, 15721993

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -15721992
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 15721993 can be divided by 12 positive divisors. The sum of these divisors (counting 15721993) is 1, the average is 0.083333333333333.

Base conversion 15721993

Base System Value
2 Binary 111011111110011000001001
3 Ternary 1002120202112001
4 Quaternary 323332120021
5 Quinary 13011100433
6 Senary 1320551001
8 Octal 73763011
10 Decimal 15721993
12 Duodecimal 5322461
16 Hexadecimal efe609
20 Vigesimal 4i54jd
36 Base36 9cz61

Cryptographic Hash Functions

md5 9e860b31fa7ea9e8003cfcad02b2d304
sha1 b2362abb7faadcdb6eb08210916380ec401539df
sha256 608e585ac22fd1aa33fd56dce76e3ea9f1d73f50f02fd41585336fd7862f7e9a
sha512 15b570a6daf7646081148214a8bbceab60d64bcba02abe2b2e97d8e8408d8e4cbeff4ce8218e497ab6da1f4517342d29d68ec7c99b6e75beb71bf0b11e3324ed
ripemd-160 4429106b60a4d66053b4fa7cac4f4aafb35639ac

15721993 as geometric shapes

Circle

Radius = n
Diameter 31443986
Circumference 98784195.41718
Area 7.7654221442977E+14

Sphere

Radius = n
Volume 1.6278388345959E+22
Surface area 3.1061688577191E+15
Circumference 98784195.41718

Square

Length = n
Perimeter 62887972
Area 247181063892049
Diagonal 22234255.728135

Cube

Length = n
Surface area 1483086383352294
Volume 3.8861789562433E+21
Space diagonal 27231290.672242

Equilateral Triangle

Length = n
Perimeter 47165979
Area 1.0703254033249E+14
Altitude 13615645.336121

Triangular Pyramid

Length = n
Surface area 1.0703254033249E+14
Volume 4.5799058214402E+20
Height 7411418.576045