Properties of the Number 28887

Twenty-Eight Thousand Eight Hundred Eighty-Seven

Basics

Value: 28886 → 28887 → 28888

Parity: odd

Prime: No

Previous Prime: 28879

Next Prime: 28901

Digit Sum: 33

Digital Root: 6

Palindrome: No

Factorization: 3 × 9629

Divisors: 1, 3, 9629, 28887

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111000011010111

Octal: 70327

Duodecimal: 14873

Hexadecimal: 70d7

Square: 834458769

Square Root: 169.96176040509818

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 whose sum of digits exceeds the sum of the digits of k³. A64209

Numbers k such that A007953(k) >= A007953(k³), where A007953 = digital sum in base 10. A204324

Numbers n such that 3·n and n³ have the same digit sum. A260906

Table T(n,k) of number of elements of Weyl group of type D of order 2^n-1 n! such that a reduced word uses exactly n-k distinct simple reflections 0 <= k <= n, n>=1. A112226

The number of permutations of length n sortable by 2 block transpositions. A228392

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 251", based on the 5-celled von Neumann neighborhood. A271018

θ series of 4-dimensional 5-modular lattice with det 25 and minimal norm 2. A28887

Indices of primes in sequence defined by A(0) = 27, A(n) = 10·A(n-1) + 17 for n > 0. A101971

Numbers n such that 2·10ⁿ + 8·R_n - 1 is prime, where R_n = 11...1 is the repunit (A002275) of length n. A102962