21494781 (number)

21494781 is an odd 8-digits composite number following 21494780 and preceding 21494782. In scientific notation, it is written as 2.1494781 × 10^7. The sum of its digits is 36. It has a total of 6 prime factors and 32 positive divisors. There are 11113200 positive integers (up to 21494781) that are relatively prime to 21494781.

Interesting facts

Basic properties

Name

Name twenty-one million four hundred ninety-four thousand seven hundred eighty-one

Notation

Scientific notation 2.1494781 × 10^7
Engineering notation 2.1494781 × 10^6

Prime Factorization of 21494781

Prime Factorization 3 × 3 × 3 × 11 × 343 × 211

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 2388309
Product of the distinct prime numbers

The prime factorization of 21494781 is 3 × 3 × 3 × 11 × 343 × 211. Since it has a total of 6 prime factors.

Most popular turbo-numbers

9, 9, 42, 1, 867, 766, 7169, 9888, 66001, 14946, 119552, 156237, 5008853, 3703408, 38522166, 86577921, 721262091, 397068233, 5965358568, 1913327688

Basic calculations (n = 21494781)

Multiplication

n×y
n×2 42989562
n×3 64484343
n×4 85979124
n×5 107473905

Division

n÷y
n÷2 10747390.5
n÷3 7164927
n÷3 5373695.25
n÷5 4298956.2

Exponentiation

ny
n2 462025610237961
n3 9.9311393084563E+21
n4 2.1346766451576E+29
n5 4.5884406993477E+36

Nth Root

y√n
2√n 4636.2464343475
3√n 278.04238696028
4√n 68.089987768743
5√n 29.272957683454

Divisors of 21494781

1, 3, 9, 11, 27, 33, 99, 211, 297, 343, 633, 1029, 1899, 2321, 3087, 3773, 5697, 6963, 9261, 11319, 20889, 33957, 62667, 72373, 101871, 217119, 651357, 796103, 1954071, 2388309, 7164927, 21494781

32 divisors

τ Total Divisors 32
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21494780
Sum of the proper positive divisors of n
A Arithmetic Mean 0.03125
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 32
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21494781 can be divided by 32 positive divisors. The sum of these divisors (counting 21494781) is 1, the average is 0.03125.

Base conversion 21494781

Base System Value
2 Binary 1010001111111101111111101
3 Ternary 1111110001022000
4 Quaternary 1101333233331
5 Quinary 21000313111
6 Senary 2044412513
8 Octal 121775775
10 Decimal 21494781
12 Duodecimal 7247139
16 Hexadecimal 147fbfd
20 Vigesimal 6e6gj1
36 Base36 csph9

Cryptographic Hash Functions

md5 8b152b50797775c55442d876952c3b2e
sha1 715983aee785a36bbbb02fd9261776804b093efd
sha256 47a811df2c0dc0a1122a1bb6c35543da877b0c7373c757d4a75d743429df3323
sha512 adf8e6e27bb5fb6eaaf36f4b2f7bb0bd61aed688dbf96960d44b0c0ec98ee61016f9840244e917507d242f81dc9d1a5186122384485638e0d50934644776e7af
ripemd-160 dc5943bd3ef81cdb4eece0efb4340eda713e11f6

21494781 as geometric shapes

Circle

Radius = n
Diameter 42989562
Circumference 135055692.16024
Area 1.4514962628939E+15

Sphere

Radius = n
Volume 4.1599459057631E+22
Surface area 5.8059850515757E+15
Circumference 135055692.16024

Square

Length = n
Perimeter 85979124
Area 462025610237961
Diagonal 30398210.81044

Cube

Length = n
Surface area 2772153661427766
Volume 9.9311393084563E+21
Space diagonal 37230052.789566

Equilateral Triangle

Length = n
Perimeter 64484343
Area 2.0006295783254E+14
Altitude 18615026.394783

Triangular Pyramid

Length = n
Surface area 2.0006295783254E+14
Volume 1.170395991653E+21
Height 10132736.936813