Properties of the Number -239785

Two Hundred Thirty-Nine Thousand Seven Hundred Eighty-Five

Basics

Value: -239786 → -239785 → -239784

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 34

Digital Root: 7

Palindrome: No

Factorization: 5 × 7 × 13 × 17 × 31

Divisors: 1, 5, 7, 13, 17, 31, 35, 65, 85, 91

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: Yes

Tetrahedral: No

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Representations

Binary: -111010100010101001

Octal: -724251

Duodecimal: -B6921

Hexadecimal: -3a8a9

Square: 57496846225

Square Root: 489.67846593453544

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

a(n) = numerator of the X-coordinate of n·P where P is the generator [0,0] for rational points on the curve y² + y = x³ - x. A28940

Numerator of x-coordinate of (2n+1)*P where P is the generator for rational points on the curve y² + y = x³ - x. A28944

The first of three consecutive heptagonal numbers the sum of which is equal to the sum of three consecutive primes. A298301

a(n) is the smallest number m with n divisors d such that d^m mod m = d. A371513

Heptagonal numbers which are products of five distinct primes. A353019

a(n) is the least k that has exactly n proper divisors d such that (-d)^k == -d (mod k). A380393