Properties of the Number 74480

Seventy-Four Thousand Four Hundred Eighty

Basics

Value: 74479 → 74480 → 74481

Parity: even

Prime: No

Previous Prime: 74471

Next Prime: 74489

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 ⁴ × 5 × 7 ² × 19

Divisors: 1, 2, 4, 5, 7, 8, 10, 14, 16, 19

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10010001011110000

Octal: 221360

Duodecimal: 37128

Hexadecimal: 122f0

Square: 5547270400

Square Root: 272.910241654651

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Numerator of ∏_k=0..n ((2·k+1)/(2·k+2))^(-1^t(k)) where t(k)=A010060(k) (Thue-Morse sequence). A94541

Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of M (as in A204026), given by min(F(i+1),F(j+1)), where F=A000045 (Fibonacci numbers). A204027

a(n) = n * [1 + sum(k=1 to n-1) prime(k)]. A83719

Triangle T(n,k) which contains 16·n!*2^floor((n+1)/2) times the coefficient [tⁿ x^k] exp(t·x)/(15 + exp(8·t)) in row n, column k. A171685

Multiplicative closure of twin prime pair products (A037074). A74480

a(n) = ∑_i=0..n ∑_j=0..n ∑_k=0..n (-1)^i+j+k * (i+j+k)!/(i!*j!*k!). A307318