Properties of the Number 39285

Thirty-Nine Thousand Two Hundred Eighty-Five

Basics

Value: 39284 → 39285 → 39286

Parity: odd

Prime: No

Previous Prime: 39251

Next Prime: 39293

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ⁴ × 5 × 97

Divisors: 1, 3, 5, 9, 15, 27, 45, 81, 97, 135

Polygonal

Triangular: No

Square: No

Pentagonal: Yes

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1001100101110101

Octal: 114565

Duodecimal: 1A899

Hexadecimal: 9975

Square: 1543311225

Square Root: 198.20443990990717

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 compositions with alternating parts weakly decreasing (or weakly increasing). A342528

T(n,k) = number of n X k 0..3 arrays with entries increasing mod 4 by 0, 1 or 2 rightwards and downwards, starting with upper left zero. A222444

Pentagonal numbers > 0 which are not the difference of two larger pentagonal numbers. A136113

The sum of the numbers on straight lines of incrementing length n when drawn over numbers of the square spiral, where each line contains numbers which sum to the minimum possible value, and each number on the spiral can only be in one line. If two or more lines exist with the same sum the one containing the smallest number is chosen. A340974

Pentagonal numbers > 0 which are not the difference of two other pentagonal numbers > 0. A135769

Square of infinite lower triangular matrix A078122. A78123

Numbers which are both lucky and pentagonal. A128511

Numerators of continued fraction convergents to sqrt(727). A42400

Triangle read by rows: T(n,k) (n >= 1, 0 <= k <= n-1) is the number of permutations of [0..(n-1)] of spread k. A147679

Number of n X 3 0..3 arrays with entries increasing mod 4 by 0, 1 or 2 rightwards and downwards, starting with upper left zero. A222439