Properties of the Number 18774

Eighteen Thousand Seven Hundred Seventy-Four

Basics

Value: 18773 → 18774 → 18775

Parity: even

Prime: No

Previous Prime: 18773

Next Prime: 18787

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 7 × 149

Divisors: 1, 2, 3, 6, 7, 9, 14, 18, 21, 42

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100100101010110

Octal: 44526

Duodecimal: AA46

Hexadecimal: 4956

Square: 352463076

Square Root: 137.01824696003084

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

Numbers k that, when expressed in base 6 and then interpreted in base 8, give a multiple of k. A62937

Number of compositions of the integer n with strictly smallest part in the first position. A79501

Numbers k such that k⁶ + 82991 is prime. A126893

Irregular triangle read by rows: T(n,k) = number of homeomorphically irreducible connected labeled graphs with n vertices and k edges, n >= 1, 0 <= k <= n*(n-1)/2. A331438

Triangle T(n,k) of series-reduced (or homeomorphically irreducible) labeled graphs with n nodes and k edges, k=0..binomial(n,2). A60514

Expansion of the generating function of rooted planar Eulerian orientations, counted by edges. A324312

4·a(n) is the maximum possible determinant of a 3 X 3 matrix whose entries are 9 consecutive primes starting with prime(n). A340923

a(0) = 1, a(n) = 13·n² + 2 for n>0. A10004

G.f.: (x - 1)/(x⁵ - x³ - x² - x - 1). A115412

Expansion of ∏_k>=1 (1 + x^k)^d(k-1), where d(k) = number of divisors of k (A000005). A318844