21397938 (number)

21397938 is an even 8-digits composite number following 21397937 and preceding 21397939. In scientific notation, it is written as 2.1397938 × 10^7. The sum of its digits is 42. It has a total of 4 prime factors and 16 positive divisors. There are 7081056 positive integers (up to 21397938) that are relatively prime to 21397938.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1397938 × 10^7
Engineering notation 2.1397938 × 10^6

Prime Factorization of 21397938

Prime Factorization 2 × 3 × 139 × 25657

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21397938
Product of the distinct prime numbers

The prime factorization of 21397938 is 2 × 3 × 139 × 25657. Since it has a total of 4 prime factors.

Most popular turbo-numbers

9, 4, 1, 94, 728, 551, 3133, 4413, 98320, 55107, 734869, 657462, 8531382, 7224684, 15557238, 97480639, 898950460, 289364907, 5120448173, 7427109597

Basic calculations (n = 21397938)

Multiplication

n×y
n×2 42795876
n×3 64193814
n×4 85591752
n×5 106989690

Division

n÷y
n÷2 10698969
n÷3 7132646
n÷3 5349484.5
n÷5 4279587.6

Exponentiation

ny
n2 457871750651844
n3 9.7975113323996E+21
n4 2.0964654004498E+29
n5 4.4860036657971E+36

Nth Root

y√n
2√n 4625.7905270343
3√n 277.6241924424
4√n 68.013164365689
5√n 29.24653262868

Divisors of 21397938

1, 2, 3, 6, 139, 278, 417, 834, 25657, 51314, 76971, 153942, 3566323, 7132646, 10698969, 21397938

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 -21397937
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 21397938 can be divided by 16 positive divisors. The sum of these divisors (counting 21397938) is 1, the average is 0.0625.

Base conversion 21397938

Base System Value
2 Binary 1010001101000000110110010
3 Ternary 1111021010110020
4 Quaternary 1101220012302
5 Quinary 20434213223
6 Senary 2042344310
8 Octal 121500662
10 Decimal 21397938
12 Duodecimal 71bb096
16 Hexadecimal 14681b2
20 Vigesimal 6deegi
36 Base36 cqmr6

Cryptographic Hash Functions

md5 c801d3c2f9837fb24e37384c93312251
sha1 84ec19c3b8b14500c954c4bcac8ef585b6317d66
sha256 1dff4be50beac1cfe51e0bf0e1e27b1977c6464f1250e827ef8816f8d7237933
sha512 8231f3dce797e8670d38bb5b97c84b81d5e64e27a4810cf90c6171e110015288fb71b05449a3588ca99dfe1aa53e5668220f19f67af3688fe78c58a8f7b52e89
ripemd-160 1859e5aa286bb0b3a301e73583bf8e239f80e9e2

21397938 as geometric shapes

Circle

Radius = n
Diameter 42795876
Circumference 134447209.64554
Area 1.4384465281341E+15

Sphere

Radius = n
Volume 4.1039719500439E+22
Surface area 5.7537861125365E+15
Circumference 134447209.64554

Square

Length = n
Perimeter 85591752
Area 457871750651844
Diagonal 30261254.126419

Cube

Length = n
Surface area 2747230503911064
Volume 9.7975113323996E+21
Space diagonal 37062315.793209

Equilateral Triangle

Length = n
Perimeter 64193814
Area 1.9826428386988E+14
Altitude 18531157.896604

Triangular Pyramid

Length = n
Surface area 1.9826428386988E+14
Volume 1.1546477836486E+21
Height 10087084.708806