740
domain: N
Properties
Digital Properties
- Digit Count
- 3
- Digit Sum
- 11
- Digital Root
- 2
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 1596
- Proper Divisor Sum (Aliquot Sum)
- 856
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 288
- Möbius Function
- 0
- Radical
- 370
- Omega Function (Ω)
- 4
- 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
- no
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 46
- Smith Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- no
- 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
Names
- German
- siebenhundertvierzig· ordinal: siebenhundertvierzigste
- English
- seven hundred forty· ordinal: seven hundred fortieth
- Spanish
- setecientos cuarenta· ordinal: 740º
- French
- sept cent quarante· ordinal: sept cent quarantième
- Italian
- settecentoquaranta· ordinal: 740º
- Latin
- septingenti quadraginta· ordinal: 740.
- Portuguese
- setecentos e quarenta· ordinal: 740º
Appears in sequences
- a(n) = n*(n+3)/2.at n=37A000096
- Construct a triangle as in A036262. Sequence is one less than the position of the first number larger than 2 in the n-th row (n-th difference).at n=22A000232
- a(n) = Sum_{k=1..n-1} k*sigma(k)*sigma(n-k).at n=7A000441
- Number of ways of making change for n cents using coins of 1, 2, 5, 10, 20, 50 cents.at n=59A001313
- Number of n-stacks with strictly receding walls, or the number of Type A partitions of n in the sense of Auluck (1951).at n=24A001522
- Numbers k such that the k-th tetrahedral number is the sum of 2 tetrahedral numbers.at n=26A002311
- Denominators of continued fraction convergents to fifth root of 5.at n=9A002363
- High temperature series for spin-1/2 Ising magnetic susceptibility on 2D square lattice.at n=6A002906
- Beginnings of periodic unitary aliquot sequences.at n=60A003062
- Numbers that are the sum of 12 positive 6th powers.at n=12A003368
- Number of binary tree partitions.at n=7A006365
- Number of n-edge 3-connected planar maps with a sense-reversing automorphism.at n=18A006445
- Numbers that are the sum of 2 nonzero squares in 2 or more ways.at n=50A007692
- Coordination sequence T2 for Zeolite Code LOV.at n=18A008135
- Coordination sequence T3 for Zeolite Code MTN.at n=16A008188
- Multiples of 20.at n=37A008602
- Molien series of 5 X 5 upper triangular matrices over GF( 2 ).at n=50A008644
- Molien series of 5 X 5 upper triangular matrices over GF( 2 ).at n=51A008644
- If a, b in sequence, so is ab+4.at n=18A009303
- Expansion of Product_{k>=1} (1-x^k)^40.at n=2A010840