1030
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 4
- Digital Root
- 4
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 1872
- Proper Divisor Sum (Aliquot Sum)
- 842
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 408
- Möbius Function
- -1
- Radical
- 1030
- Omega Function (Ω)
- 3
- Little Omega Function (ω)
- 3
Special
- Factorial
- no
- Catalan Number
- no
- Bell Number
- no
- Motzkin Number
- no
- Primorial
- no
Figurate Numbers
- Fibonacci Number
- no
- Triangular Number
- no
- Perfect Square
- no
- Perfect Cube
- no
- Pentagonal Number
- no
- Hexagonal Number
- no
- Lucas Number
- no
- Tetrahedral Number
- no
- Pell Number
- no
- Tribonacci Number
- no
- Pronic Number
- no
Recreational
- Happy Number
- yes
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 124
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- yes
- Prime Power
- no
- Prime Factorization
- no
- Twin Prime
- no
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- yes
- Odd
- no
Appears in sequences
- Number of genus 0 rooted maps with 3 faces with n vertices.at n=3A000184
- Number of genus 0 rooted planar maps with 4 faces and n vertices.at n=2A000365
- "Half-Catalan numbers": a(n) = Sum_{k=1..floor(n/2)} a(k)*a(n-k) with a(1) = 1.at n=12A000992
- Shifts left two terms under the binomial transform.at n=10A000995
- Numbers that are the sum of 7 positive 5th powers.at n=28A003352
- Sum of 10 nonzero 8th powers.at n=4A003388
- Numbers that are the sum of 8 positive 9th powers.at n=2A003397
- a(n) = Fibonacci(n+2) + prime(n).at n=13A004399
- Convolution of A002024 with itself.at n=35A004797
- Numbers that are the sum of 7 positive 10th powers.at n=1A004807
- Numbers that are the sum of at most 10 nonzero 8th powers.at n=44A004883
- Numbers that are the sum of at most 8 positive 9th powers.at n=23A004892
- Numbers that are the sum of at most 9 positive 9th powers.at n=25A004893
- Numbers that are the sum of at most 10 positive 9th powers.at n=27A004894
- Numbers that are the sum of at most 11 positive 9th powers.at n=29A004895
- Numbers that are the sum of at most 12 positive 9th powers.at n=31A004896
- Numbers that are the sum of at most 7 nonzero 10th powers.at n=14A004902
- Numbers that are the sum of at most 8 nonzero 10th powers.at n=15A004903
- Numbers that are the sum of at most 9 nonzero 10th powers.at n=16A004904
- Numbers that are the sum of at most 10 nonzero 10th powers.at n=17A004905