72051221 is an odd 8-digits composite number following 72051220
and preceding 72051222 . In scientific notation, it is written as 7.2051221 × 10^7.
The sum of its digits is 20. It has a total of 4 prime factors and 16 positive divisors.
There are 63448320 positive integers (up to 72051221) that are relatively prime to 72051221.
72051221 has 16 divisors, whose sum is 81103680
The reverse of 72051221 is 12215027
Previous prime number is 83
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 20
Digital Root 2
Name
seventy-two million fifty-one thousand two hundred twenty-one
Scientific notation
7.2051221 × 10^7
Engineering notation
7.2051221 × 10^6
Prime Factorization
11 × 53 × 83 × 1489
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
72051221
Product of the distinct prime numbers
The prime factorization of 72051221 is 11 × 53 × 83 × 1489.
Since it has a total of 4 prime factors.
9 , 3 , 58 , 72 , 427 , 854 , 107 , 8575 , 45826 , 93570 , 502200 , 905319 , 4090601 , 1660699 , 18831390 , 92511952 , 418212687 , 704415062 , 8270862457 , 2526468739
n×2
144102442
n×3
216153663
n×4
288204884
n×5
360256105
n÷2
36025610.5
n÷3
24017073.666667
n÷3
18012805.25
n÷5
14410244.2
n2
5191378447590841
n3
3.74045155822E+23
n4
2.6950410186111E+31
n5
1.9418099603601E+39
2 √n
8488.2990640057
3 √n
416.11539305321
4 √n
92.13196548433
5 √n
37.284495327468
1 , 11 , 53 , 83 , 583 , 913 , 1489 , 4399 , 16379 , 48389 , 78917 , 123587 , 868087 , 1359457 , 6550111 , 72051221
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
-72051220
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 72051221 can be divided by 16 positive divisors.
The sum of these divisors (counting 72051221) is 1, the average is 0.0625.
Base
System
Value
2
Binary
100010010110110101000010101
3
Ternary
12000120120200202
4
Quaternary
10102312220111
5
Quinary
121421114341
6
Senary
11052150245
8
Octal
422665025
10
Decimal
72051221
12
Duodecimal
20168385
16
Hexadecimal
44b6a15
20
Vigesimal
12a6811
36
Base36
16wb2t
md5
6ce631381741b0e03fecaebff5b40030
sha1
46e1a1feec4e0a1f23f70472f1c6898efd9c41d7
sha256
94191c71af9fcfaf8bf9d14147452758ae8d413806fb078324fe2dc91e52d958
sha512
ab24124ab2af9785f07595ba9f35e2ea7614dd4b9b640430a084636686104053c2baacf3c8b0a26fb6a440abfffb29545c54503380c6df3152e6e1593d2b750d
ripemd-160
f7757247bd6094b6bbab6925fca763de2d48fb8f
Diameter
144102442
Circumference
452711173.15155
Area
1.6309196392956E+16
Volume
1.566796684855E+24
Surface area
6.5236785571823E+16
Circumference
452711173.15155
Perimeter
288204884
Area
5191378447590841
Diagonal
101895813.92374
Surface area
31148270685545046
Volume
3.74045155822E+23
Space diagonal
124796375.51937
Perimeter
216153663
Area
2.2479328081363E+15
Altitude
62398187.759687
Surface area
2.2479328081363E+15
Volume
4.408164435862E+22
Height
33965271.307914