Properties of the Number 20154

Twenty Thousand One Hundred Fifty-Four

Basics

Value: 20153 → 20154 → 20155

Parity: even

Prime: No

Previous Prime: 20149

Next Prime: 20161

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 3359

Divisors: 1, 2, 3, 6, 3359, 6718, 10077, 20154

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100111010111010

Octal: 47272

Duodecimal: B7B6

Hexadecimal: 4eba

Square: 406183716

Square Root: 141.96478436570106

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

Number of partitions p of n such that median(p) = multiplicity(min(p)). A240214

Number of base 30 n-digit numbers with adjacent digits differing by one or less. A126384

Position of first repeat of the opening sequence of length n occurring after the first repeat of the opening sequence of length n-1 in the Kolakoski sequence (A000002). A74300

Numbers k such that the decimal part of k^1/8 starts with a 'nine digits' anagram. A34283

Numbers k such that the quotient (σ(k) + σ(k+1) + σ(k+2))/σ(3·k+3) is an integer. A91292

a(n+3) = 2a(n+2) - 3a(n+1) + 2a(n); a(0) = 1, a(1) = -1, a(2) = -2. A105225

Number of n X 7 binary arrays without the pattern 0 1 diagonally, vertically or antidiagonally. A188864

G.f. A(x) satisfies: A( x - A(x)³ ) = x+x³ - A(x)³. A216171

a(n) begins the first run of least n consecutive numbers whose sum of divisors has the same set of distinct prime divisors. A303693

Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite YUG = Yugawaralite Ca2[Al4Si12O32].8H2O starting from a T2 atom. A19265