ℕ atory
Play Now

Properties of the Number 28528

Twenty-Eight Thousand Five Hundred Twenty-Eight

Basics

Value: 28527 → 28528 → 28529

Parity: even

Prime: No

Previous Prime: 28517

Next Prime: 28537

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 4 × 1783

Divisors: 1, 2, 4, 8, 16, 1783, 3566, 7132, 14264, 28528

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110111101110000

Octal: 67560

Duodecimal: 14614

Hexadecimal: 6f70

Square: 813846784

Square Root: 168.9023386457393

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

Length of n-th term in Look and Say sequences A005150 and A007651. A5341
Maximal length of rook tour on an n X n+2 board. A152133
Number of ways to split 1, 2, 3, ..., 8n into n arithmetic progressions each with 8 terms. A104434
(2n+1)-digit anti-palindromic numbers or numberdromes, whose first and last digits add to ten, second and next-to-last add to ten and so on with the central digit a 5. A93472
Number of length n arrays of permutations of 0..n-1 with each element moved by -3 to 3 places and with no two consecutive decreases. A263678
a(1) = 1; a(n) = sum of previous terms a(k) such that a(k) + n is prime. A108867
Triangle T(n,m) (n >= 1, 0 <= m < n) giving coefficients of (n-1)! Pn, where Pn is the polynomial formula for row n of A213086. A273528
5-Modular Catalan Numbers Cn,5. A261588
Subsequence of A107629. Consider a Gaussian prime a+bi with index k in A103431. k is in A107632 when an integer multiplier m exists such that the distance of m·norm(a+bi) to k is minimal up to k. abs(m·norm(a+bi) - k) is minimal up to k. A107633 gives the squares of the norms of these Gaussian primes, A107634 the integer multipliers m. A107632
Character of extremal vertex operator algebra of rank 19/2. A28528