Properties of the Number 18974

Eighteen Thousand Nine Hundred Seventy-Four

Basics

Value: 18973 → 18974 → 18975

Parity: even

Prime: No

Previous Prime: 18973

Next Prime: 18979

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 2 × 53 × 179

Divisors: 1, 2, 53, 106, 179, 358, 9487, 18974

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100101000011110

Octal: 45036

Duodecimal: AB92

Hexadecimal: 4a1e

Square: 360012676

Square Root: 137.7461433216916

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

Consider recurrence b(0) = (2n+1)/2, b(n) = b(0)*ceiling(b(n-1)); sequence gives first integer reached. A81849

a(n) = (n!)² * ∑_k=1..n 1/(k²*(k-1)!). A61572

Column 5 of triangle A055907. A55911

σ(n) + φ(n) is a fourth power. A114068

Numbers n such that A193232(n) is a triangular number. A220518

a(n)=1+(1/12)(n*(n+1)*(n+3)*(4-n)). A80260

a(n) = PrimePi(A246033(n)) (where PrimePi = A000720). A290652

Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite AHT = AlPO4-H2 [Al6P6O12].8H2O starting from a T1 atom. A18974