Number
74
- Positive
- Even
- Composite
- 2 digits
74 is an even 2-digit integer and a composite number. It has 4 divisors and a digital root of 2.
Number properties
ParityEvendivisible by 2
SignPositive
PrimalityComposite
Absolute value74
Digit count2
Digit sum11
Digital root2repeated digit sum
PalindromicNoreads differently backwards
Happy numberNosquared-digit sums reach 1
Harshad numberNodivisible by its own digit sum
Factors & divisors
Prime factorisation2 × 37
Distinct prime factors22, 37
Number of divisors4
Sum of divisors σ(n)114
Aliquot sum40sum of the proper divisors
ClassificationDeficientthe aliquot sum is less than the number
Euler's totient φ(n)36integers below n that share no factor with it
SquarefreeYesno repeated prime factor
All divisors1, 2, 37, 744 in total
Arithmetic
Representations
Decimal74
Binary10010107 bits
Octal112
Hexadecimal4A
Base 3622
Roman numeralLXXIV
In wordsseventy-four
Ordinalseventy-fourth
Scientific notation7.4 × 10^1
Engineering notation74
Nearest landmarks
Powers & multiples
74 to the power 25,476
74 to the power 3405,224
74 to the power 429,986,576
74 to the power 52,219,006,624
First ten multiples74, 148, 222, 296, 370, 444, 518, 592, 666, 740
Powers of twoBetween 2^6 (64) and 2^7 (128)
Divisibility tests
Divisible by 2Yes
Divisible by 3No, remainder 2
Divisible by 4No, remainder 2
Divisible by 5No, remainder 4
Divisible by 6No, remainder 2
Divisible by 7No, remainder 4
Divisible by 8No, remainder 2
Divisible by 9No, remainder 2
Divisible by 10No, remainder 4
Divisible by 11No, remainder 8
Divisible by 12No, remainder 2
Divisible by 100No, remainder 74
Collatz (3n + 1) trajectory
Steps to reach 122the total stopping time
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps74 → 37 → 112 → 56 → 28 → 14 → 7 → 22 → 11 → 34 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1
As a percentage & fraction
As a percentage7,400%
74% as a decimal0.74
74% of 10074
74% of 1,000740
As a fraction of 10074/100
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