Properties of the Number 28088

Twenty-Eight Thousand Eighty-Eight

Basics

Value: 28087 → 28088 → 28089

Parity: even

Prime: No

Previous Prime: 28087

Next Prime: 28097

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 ³ × 3511

Divisors: 1, 2, 4, 8, 3511, 7022, 14044, 28088

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110110110111000

Octal: 66670

Duodecimal: 14308

Hexadecimal: 6db8

Square: 788935744

Square Root: 167.594749321093

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 such that 2^k mod k = 2^k mod k². A68535

a(n) = ∑_i=0..n digsum₄(i)⁴, where digsum₄(i) = A053737(i). A231667

Numbers k that are not powers of 2 such that 2^k mod k = 2^k mod k²; or A068535 with powers of 2 excluded. A125773

Numbers k such that the ring of integers of Q(2^1/k) is not Z[2^1/k]. A342390

a(n) = n⁵-n⁴-n³-n²-n. A152017

G.f. satisfies: A(x) = ∑_n>=0 xⁿ*[∑_k=0..n C(n,k)³ *x^k* A(x)^2k]. A187000

G.f. satisfies: A(x) = 1 + x·A(x)⁴ / (A(x) - x·A'(x)). A245768

Numbers k such that ||k/log(k)|| reaches a new minimum, where ||x|| is the distance from·to the nearest integer. A178805

Numbers n such that ||n/log(n)|| * log(n) reaches a new minimum, where ||x|| is the distance from·to the nearest integer. A178806

Expansion of 1/((1-3x)(1-6x)(1-11x)(1-12x)). A28088