Properties of the Number 28388

Twenty-Eight Thousand Three Hundred Eighty-Eight

Basics

Value: 28387 → 28388 → 28389

Parity: even

Prime: No

Previous Prime: 28387

Next Prime: 28393

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 2 ² × 47 × 151

Divisors: 1, 2, 4, 47, 94, 151, 188, 302, 604, 7097

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110111011100100

Octal: 67344

Duodecimal: 14518

Hexadecimal: 6ee4

Square: 805878544

Square Root: 168.4873882520588

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

Powers of cube root of 3 rounded to nearest integer. A17983

Powers of cube root of 3 rounded up. A17984

Powers of cube root of 9 rounded to nearest integer. A18001

Powers of cube root of 9 rounded up. A18002

Numbers k such that 19^k - 2 is a prime. A128460

Numbers k such that k³ can be represented as the sum of k consecutive nonprimes. A389751

Number of "prime quadruplets" with largest member < 10ⁿ. A50258

Good primes (version 2): prime(n) such that prime(n)² > prime(n-i)*prime(n+i) for all 1 <= i <= n-1. A28388

Numbers k such that k-4, k-2, k+2 and k+4 are prime. A173037