Properties of the Number 81907

Eighty-One Thousand Nine Hundred Seven

Basics

Value: 81906 → 81907 → 81908

Parity: odd

Prime: No

Previous Prime: 81901

Next Prime: 81919

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 7 × 11701

Divisors: 1, 7, 11701, 81907

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011111111110011

Octal: 237763

Duodecimal: 3B497

Hexadecimal: 13ff3

Square: 6708756649

Square Root: 286.19399015353207

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

Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n-1), where a(0) = 1, a(1) = 2, b(0) = 3, and (a(n)) and (b(n)) are increasing complementary sequences. A294541

a(n) = n³ + reversal of digits of n³. A319603

Number of 3 X n arrays of the minimum value of corresponding elements and their horizontal or vertical neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..2 3 X n array. A219596

Fifth binomial transform of binomial(n+2, 2). A81907

a(n) = sum of numbers formed using the digits of next n numbers. A81993