12897981 (number)

12897981 is an odd 8-digits composite number following 12897980 and preceding 12897982. In scientific notation, it is written as 1.2897981 × 10^7. The sum of its digits is 45. It has a total of 4 prime factors and 16 positive divisors. There are 8573040 positive integers (up to 12897981) that are relatively prime to 12897981.

Interesting facts

Basic properties

Name

Name twelve million eight hundred ninety-seven thousand nine hundred eighty-one

Notation

Scientific notation 1.2897981 × 10^7
Engineering notation 1.2897981 × 10^6

Prime Factorization of 12897981

Prime Factorization 3 × 9 × 541 × 883

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 12897981
Product of the distinct prime numbers

The prime factorization of 12897981 is 3 × 9 × 541 × 883. Since it has a total of 4 prime factors.

Most popular turbo-numbers

10, 6, 12, 91, 670, 604, 5627, 7365, 80719, 4555, 166325, 417651, 7547136, 7814577, 43482648, 111513, 440938983, 820671308, 5610968705, 2694528943

Basic calculations (n = 12897981)

Multiplication

n×y
n×2 25795962
n×3 38693943
n×4 51591924
n×5 64489905

Division

n÷y
n÷2 6448990.5
n÷3 4299327
n÷3 3224495.25
n÷5 2579596.2

Exponentiation

ny
n2 166357913876361
n3 2.1456812123769E+21
n4 2.7674955509295E+28
n5 3.5695105033473E+35

Nth Root

y√n
2√n 3591.3759201732
3√n 234.51677374359
4√n 59.928089575534
5√n 26.430437168363

Divisors of 12897981

1, 3, 9, 27, 541, 883, 1623, 2649, 4869, 7947, 14607, 23841, 477703, 1433109, 4299327, 12897981

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 -12897980
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 12897981 can be divided by 16 positive divisors. The sum of these divisors (counting 12897981) is 1, the average is 0.0625.

Base conversion 12897981

Base System Value
2 Binary 110001001100111010111101
3 Ternary 220021021201000
4 Quaternary 301030322331
5 Quinary 11300213411
6 Senary 1140240513
8 Octal 61147275
10 Decimal 12897981
12 Duodecimal 43a0139
16 Hexadecimal c4cebd
20 Vigesimal 40c4j1
36 Base36 7og59

Cryptographic Hash Functions

md5 51b09150118b9c2a373acc1138f32e29
sha1 a249dd8fad792aa143905923bb3fb7d7f017b552
sha256 73dd60dff28644f5c2de76a802b36cf8b97deddf0937fdb6f9aab487404012eb
sha512 f4f8080b4d49ca1d2518af37d6678344c63e3da816b0a4f678fe24a97beb6d0d0dbe9244e6fe707078669a81242c935503483eac19da62dfe51914d24e9a0322
ripemd-160 5aa25c21983e41400af9f9ca20350eeba36ccbf9

12897981 as geometric shapes

Circle

Radius = n
Diameter 25795962
Circumference 81040404.711481
Area 5.226288001005E+14

Sphere

Radius = n
Volume 8.9878084449987E+21
Surface area 2.090515200402E+15
Circumference 81040404.711481

Square

Length = n
Perimeter 51591924
Area 166357913876361
Diagonal 18240499.65743

Cube

Length = n
Surface area 998147483258166
Volume 2.1456812123769E+21
Space diagonal 22339958.407058

Equilateral Triangle

Length = n
Perimeter 38693943
Area 72035089768756
Altitude 11169979.203529

Triangular Pyramid

Length = n
Surface area 72035089768756
Volume 2.5287095592272E+20
Height 6080166.5524768