Properties of the Number 28998

Twenty-Eight Thousand Nine Hundred Ninety-Eight

Basics

Value: 28997 → 28998 → 28999

Parity: even

Prime: No

Previous Prime: 28979

Next Prime: 29009

Digit Sum: 36

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ⁴ × 179

Divisors: 1, 2, 3, 6, 9, 18, 27, 54, 81, 162

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: Yes

Tetrahedral: No

Today's Target

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Representations

Binary: 111000101000110

Octal: 70506

Duodecimal: 14946

Hexadecimal: 7146

Square: 840884004

Square Root: 170.2879913558205

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

Number of excursions of length n with Motzkin-steps avoiding the consecutive steps UU and HH. A329666

Numbers k such that k² contains only digits {0,4,8}, not ending with zero. A58441

a(n)² is a square whose decimal expansion digits occur with an exact frequency of 3. A52095

McKay-Thompson series of class 31A for Monster. A58628

Numbers k such that k² has only digits 0, 4 and 8. A202170

a(n) = 2·n³ - 4·n² + 10·n - 2 (n>=1). A304161

a(n) is the least multiple of n that is not a Niven (or Harshad) number. A357937

Numbers k such that k and k² use only the digits 0, 2, 4, 8 and 9. A136909

Number of binary strings of length n with equal numbers of 0001 and 0011 substrings. A164156

Number of (n+1) X 3 binary arrays with rows and columns in nondecreasing order and with no 2 X 2 subblock sum differing from a horizontal or vertical neighbor subblock sum by more than one. A184064