Properties of the Number 18412

Eighteen Thousand Four Hundred Twelve

Basics

Value: 18411 → 18412 → 18413

Parity: even

Prime: No

Previous Prime: 18401

Next Prime: 18413

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 ² × 4603

Divisors: 1, 2, 4, 4603, 9206, 18412

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100011111101100

Octal: 43754

Duodecimal: A7A4

Hexadecimal: 47ec

Square: 339001744

Square Root: 135.69082503986775

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

Inverse Moebius transform of the shifted tetrahedral numbers. A116963

Denominators of convergents to π by Farey fractions. A63673

T(j,k) are the numerators u in the representation R = s/t + (2/π)*u/v of the resistance between two nodes separated by the distance vector (j,k) in an infinite square lattice of one-ohm resistors, where T(j,k), j >= 0, 0 <= k <= j, is a triangle read by rows. A355566

Decimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 611", based on the 5-celled von Neumann neighborhood. A283290

Expansion of ∑_k>0 (1/(1+x^k)⁴ - 1). A363631

Numbers k such that k² is a square arising in A154138. A156066

a(n) is the smallest number which can be represented as the sum of n distinct nonzero triangular numbers in exactly n ways, or 0 if no such number exists. A350288

Numbers n such that both n*π and n·e are within 1/sqrt(n) of integers. A208530

Numbers for which the cube of the sum of the digits is equal to the square of the product of their digits. A241846

a(n) = 144·2ⁿ - 20 (n>=1). A304388