28951921 is an odd 8-digits prime number following 28951920
and preceding 28951922 . In scientific notation, it is written as 2.8951921 × 10^7.
The sum of its digits is 37. It has a total of 1 prime factors and 2 positive divisors.
There are 28951920 positive integers (up to 28951921) that are relatively prime to 28951921.
28951921 has 2 divisors, whose sum is 28951922
The reverse of 28951921 is 12915982
Previous prime number is 1
Is Prime? yes Number parity odd Number length 8 Sum of Digits 37 Digital Root 1
Name
twenty-eight million nine hundred fifty-one thousand nine hundred twenty-one
Scientific notation
2.8951921 × 10^7
Engineering notation
2.8951921 × 10^6
Prime Factorization
28951921
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
28951921 Product of the distinct prime numbers
The prime factorization of 28951921 is 28951921.
Since it has a total of 1 prime factors.
1 , 7 , 71 , 12 , 371 , 945 , 8159 , 1538 , 87473 , 84890 , 35120 , 322406 , 9336761 , 4927545 , 39060497 , 99459904 , 640824045 , 864696789 , 8987997722 , 8816736005
n×2
57903842
n×3
86855763
n×4
115807684
n×5
144759605
n÷2
14475960.5
n÷3
9650640.3333333
n÷3
7237980.25
n÷5
5790384.2
n2
838213729590241
n3
2.4267897680212E+22
n4
7.0260225647358E+29
n5
2.0341685023845E+37
2 √n5380.6989322949
3 √n307.06180253709
4 √n73.353247592012
5 √n31.069586762694
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
28951922 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
14475961 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
5380.6990252197 Returns the nth root of the product of n divisors
H Harmonic Mean
1.99999993092 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 28951921 can be divided by 2 positive divisors.
The sum of these divisors (counting 28951921) is 28951922, the average is 14475961.
Base
System
Value
2
Binary
1101110011100010101110001
3
Ternary
2000110220120101
4
Quaternary
1232130111301
5
Quinary
24402430141
6
Senary
2512312401
8
Octal
156342561
10
Decimal
28951921
12
Duodecimal
9842701
16
Hexadecimal
1b9c571
20
Vigesimal
90ijg1
36
Base36
h8jg1
md5
2cbbb0d2ff6a88aed41e94421d5f77e9
sha1
2ddf32580a6aa4b962148eec542e707b668e2d2b
sha256
85e212718e1b674c7b2e4341716533eee7824b1adcadb819041f9d3fe95ef3b7
sha512
70f58ea8f65870ee1c448a7604c934a38ef7c73028502321423fec0cbafe781113f3b2e274b23fe40a2950c08df015e9f89e797b9244d7d7eb4928fa0dbdc66a
ripemd-160
fda3c9ddaf75271295f791314c31691c15501d4d
Diameter
57903842
Circumference
181910284.64182
Area
2.6333260950188E+15
Volume
1.0165313209363E+23
Surface area
1.0533304380075E+16
Circumference
181910284.64182
Perimeter
115807684
Area
838213729590241
Diagonal
40944199.334954
Surface area
5029282377541446
Volume
2.4267897680212E+22
Space diagonal
50146198.14872
Perimeter
86855763
Area
3.6295719181302E+14
Altitude
25073099.07436
Surface area
3.6295719181302E+14
Volume
2.8599991691365E+21
Height
13648066.444985