Properties of the Number 5440

Five Thousand Four Hundred Forty

Basics

Value: 5439 → 5440 → 5441

Parity: even

Prime: No

Previous Prime: 5437

Next Prime: 5441

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 ⁶ × 5 × 17

Divisors: 1, 2, 4, 5, 8, 10, 16, 17, 20, 32

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 1010101000000

Octal: 12500

Duodecimal: 3194

Hexadecimal: 1540

Square: 29593600

Square Root: 73.7563556583431

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

4-dimensional pyramidal numbers: a(n) = n²*(n²-1)/12. A2415

Triangular array: T(n,k) counts the partitions of the set [n] into k odd sized blocks. A136630

a(n) = 4·n² - 9·n + 6. A54556

Numbers whose sum of prime indices is twice their number, counted with multiplicity in both cases. A340387

Generalized 28-gonal (or icosioctagonal) numbers: m*(13·m - 12) with m = 0, +1, -1, +2, -2, +3, -3, ... A303812

Number of strict odd-length integer partitions of 2n. A344650

Number of "ON" cells at n-th stage in simple 2-dimensional cellular automaton (see Comments for precise definition). A160410

If X₁, ..., X_n is a partition of a 2n-set X into 2-blocks then a(n) is equal to the number of 3-subsets of X containing none of X_i, (i=1,...,n). A130809

Numbers with exactly 2 odd integers in their Collatz (or 3x+1) trajectory. A62052

T(n,k)=Number of nXk 0..2 arrays with exactly floor(nXk/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..2 order. A222690