21249987 (number)

21249987 is an odd 8-digits composite number following 21249986 and preceding 21249988. In scientific notation, it is written as 2.1249987 × 10^7. The sum of its digits is 42. It has a total of 4 prime factors and 16 positive divisors. There are 12845120 positive integers (up to 21249987) that are relatively prime to 21249987.

Interesting facts

Basic properties

Name

Name twenty-one million two hundred forty-nine thousand nine hundred eighty-seven

Notation

Scientific notation 2.1249987 × 10^7
Engineering notation 2.1249987 × 10^6

Prime Factorization of 21249987

Prime Factorization 3 × 11 × 587 × 1097

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21249987
Product of the distinct prime numbers

The prime factorization of 21249987 is 3 × 11 × 587 × 1097. Since it has a total of 4 prime factors.

Most popular turbo-numbers

9, 8, 88, 67, 651, 326, 7092, 940, 99080, 36214, 270917, 374556, 9834095, 6461934, 77700157, 86586739, 107771082, 928315579, 9190831421, 5253962812

Basic calculations (n = 21249987)

Multiplication

n×y
n×2 42499974
n×3 63749961
n×4 84999948
n×5 106249935

Division

n÷y
n÷2 10624993.5
n÷3 7083329
n÷3 5312496.75
n÷5 4249997.4

Exponentiation

ny
n2 451561947500169
n3 9.5956855140733E+21
n4 2.0390819243015E+29
n5 4.3330464383341E+36

Nth Root

y√n
2√n 4609.7708185983
3√n 276.98285635492
4√n 67.895293051862
5√n 29.205976655527

Divisors of 21249987

1, 3, 11, 33, 587, 1097, 1761, 3291, 6457, 12067, 19371, 36201, 643939, 1931817, 7083329, 21249987

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 -21249986
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 21249987 can be divided by 16 positive divisors. The sum of these divisors (counting 21249987) is 1, the average is 0.0625.

Base conversion 21249987

Base System Value
2 Binary 1010001000011111111000011
3 Ternary 1110222121111120
4 Quaternary 1101003333003
5 Quinary 20414444422
6 Senary 2035243323
8 Octal 121037703
10 Decimal 21249987
12 Duodecimal 7149543
16 Hexadecimal 1443fc3
20 Vigesimal 6cg4j7
36 Base36 cnglf

Cryptographic Hash Functions

md5 6d9999ae43128247081e953ee2ebda4c
sha1 41cba043c820495f7d08beea82b3097e577e3e64
sha256 5e95323f552c4db055ec211b8fd18770642b9f39985c793fde41b7451e7fd606
sha512 386623221655852ae552959190de4995dc3e4fc8c392c05400900d86f5f588ea729668d2da2419cc60028f898aa19d3be99d1ac9697a0ad8754ed2f05b5c6ca5
ripemd-160 52ae9f2dde7f22bb7f0dbeea25c5b20d35803441

21249987 as geometric shapes

Circle

Radius = n
Diameter 42499974
Circumference 133517606.09616
Area 1.4186236969072E+15

Sphere

Radius = n
Volume 4.0194313489561E+22
Surface area 5.6744947876289E+15
Circumference 133517606.09616

Square

Length = n
Perimeter 84999948
Area 451561947500169
Diagonal 30052019.815652

Cube

Length = n
Surface area 2709371685001014
Volume 9.5956855140733E+21
Space diagonal 36806057.144178

Equilateral Triangle

Length = n
Perimeter 63749961
Area 1.9553205895876E+14
Altitude 18403028.572089

Triangular Pyramid

Length = n
Surface area 1.9553205895876E+14
Volume 1.1308623828558E+21
Height 10017339.938551