Properties of the Number 18456

Eighteen Thousand Four Hundred Fifty-Six

Basics

Value: 18455 → 18456 → 18457

Parity: even

Prime: No

Previous Prime: 18451

Next Prime: 18457

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 2 ³ × 3 × 769

Divisors: 1, 2, 3, 4, 6, 8, 12, 24, 769, 1538

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100100000011000

Octal: 44030

Duodecimal: A820

Hexadecimal: 4818

Square: 340623936

Square Root: 135.85286158193355

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

a(n) = the smallest positive integer that, when written in binary, contains both binary n and binary n² as substrings. A165820

Consider all integer triples (i,j,k), j >= k > 0, with binomial(i+2,3)=j³+k³, ordered by increasing i; sequence gives j values. A54206

a(1) = 1, a(n+1) = a(n) + gpf(∑_i=1..n a(i)), where gpf=A006530 (greatest prime factor). A80182

Number of 6's in the last section of the set of partitions of n. A206556

E.g.f. A(x) satisfies A(A(A(A(x)))) = x·exp(4·x). A372736

a(n) = prime(n) + n³ + n² + 4n - 1. A60822

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 49", based on the 5-celled von Neumann neighborhood. A270016

Numbers k such that 345·2^k+1 is prime. A319742

Let b(1)=x, b(2)=y, k·b(k)=(2k-1)*b(k-1) + 3(k+1)*b(k-2); then b(n)=a(n)*x+c(n)/3·y. A76148

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 1), (-1, 0, 0), (0, -1, 1), (0, 1, 0), (1, 1, -1)}. A148200