Properties of the Number 28845

Twenty-Eight Thousand Eight Hundred Forty-Five

Basics

Value: 28844 → 28845 → 28846

Parity: odd

Prime: No

Previous Prime: 28843

Next Prime: 28859

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 5 × 641

Divisors: 1, 3, 5, 9, 15, 45, 641, 1923, 3205, 5769

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111000010101101

Octal: 70255

Duodecimal: 14839

Hexadecimal: 70ad

Square: 832034025

Square Root: 169.83815825661793

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 n such that sum of digits of n equals the sum of digits of n³. A70276

G.f. A(x) satisfies A(x) = 1 + x * (A(x) / (1 - x))^5/2. A366431

Numbers k such that the sums of the digits of k, k² and k³ coincide. A111434

Primitive numbers n such that the sums of the digits of n, n² and n³ coincide (cf. A111434). A114135

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

Decimal part of n-th root of a(n) starts with digit 9. A34086

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

G.f. A(x) satisfies: A(x) = (1 + x) * A(x²)*A(x³)*A(x⁵)* ... *A(x^prime(k))* ... A308272

Number of 0..n arrays x(0..9) of 10 elements with zero 5th differences. A200446

Numbers n such that 2·n and n³ have the same digit sum. A266315