21531978 (number)

21531978 is an even 8-digits composite number following 21531977 and preceding 21531979. In scientific notation, it is written as 2.1531978 × 10^7. The sum of its digits is 36. It has a total of 6 prime factors and 64 positive divisors. There are 6023808 positive integers (up to 21531978) that are relatively prime to 21531978.

Interesting facts

Basic properties

Name

Name twenty-one million five hundred thirty-one thousand nine hundred seventy-eight

Notation

Scientific notation 2.1531978 × 10^7
Engineering notation 2.1531978 × 10^6

Prime Factorization of 21531978

Prime Factorization 2 × 9 × 13 × 19 × 29 × 167

Composite number
ω Distinct Factors 6
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 21531978
Product of the distinct prime numbers

The prime factorization of 21531978 is 2 × 9 × 13 × 19 × 29 × 167. Since it has a total of 6 prime factors.

Most popular turbo-numbers

1, 6, 6, 82, 788, 913, 9149, 2791, 51572, 79553, 275991, 692936, 4858159, 6747155, 56292182, 17308476, 972404459, 828693950, 9275098032, 4088553149

Basic calculations (n = 21531978)

Multiplication

n×y
n×2 43063956
n×3 64595934
n×4 86127912
n×5 107659890

Division

n÷y
n÷2 10765989
n÷3 7177326
n÷3 5382994.5
n÷5 4306395.6

Exponentiation

ny
n2 463626076592484
n3 9.9827864814157E+21
n4 2.1494913889654E+29
n5 4.6282801298392E+36

Nth Root

y√n
2√n 4640.2562429245
3√n 278.20267986337
4√n 68.119426325568
5√n 29.283082125007

Divisors of 21531978

1, 2, 9, 13, 18, 19, 26, 29, 38, 58, 117, 167, 171, 234, 247, 261, 334, 342, 377, 494, 522, 551, 754, 1102, 1503, 2171, 2223, 3006, 3173, 3393, 4342, 4446, 4843, 4959, 6346, 6786, 7163, 9686, 9918, 14326, 19539, 28557, 39078, 41249, 43587, 57114, 62959, 64467, 82498, 87174, 92017, 125918, 128934, 184034, 371241, 566631, 742482, 828153, 1133262, 1196221, 1656306, 2392442, 10765989, 21531978

64 divisors

τ Total Divisors 64
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21531977
Sum of the proper positive divisors of n
A Arithmetic Mean 0.015625
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 64
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21531978 can be divided by 64 positive divisors. The sum of these divisors (counting 21531978) is 1, the average is 0.015625.

Base conversion 21531978

Base System Value
2 Binary 1010010001000110101001010
3 Ternary 1111111221022200
4 Quaternary 1102020311022
5 Quinary 21003010403
6 Senary 2045301030
8 Octal 122106512
10 Decimal 21531978
12 Duodecimal 7264776
16 Hexadecimal 1488d4a
20 Vigesimal 6eb9ii
36 Base36 cti6i

Cryptographic Hash Functions

md5 3b61f93fc88503f35fdf92cdf5f7ce18
sha1 772d61cdbb12dac5e44a6fb6b12e2568da4b5906
sha256 31aec9b9cd240424582afc5ac335dca67b5ebd1354499fac39ec663d0a0895b2
sha512 085d59f719171d5ab94f716c4d1171fd63564e003fdbe2aedce0b33723884ddce9913f91e82b7d2f89e68cb13ff30f268154ca06133825f357f58ea70176e1a6
ripemd-160 5d2b193802f2d1724b0e2f1df6f7ecfd2a62c900

21531978 as geometric shapes

Circle

Radius = n
Diameter 43063956
Circumference 135289407.80411
Area 1.4565242762356E+15

Sphere

Radius = n
Volume 4.1815798229828E+22
Surface area 5.8260971049424E+15
Circumference 135289407.80411

Square

Length = n
Perimeter 86127912
Area 463626076592484
Diagonal 30450815.312319

Cube

Length = n
Surface area 2781756459554904
Volume 9.9827864814157E+21
Space diagonal 37294479.883455

Equilateral Triangle

Length = n
Perimeter 64595934
Area 2.00755980093E+14
Altitude 18647239.941728

Triangular Pyramid

Length = n
Surface area 2.00755980093E+14
Volume 1.1764826693577E+21
Height 10150271.770773