Properties of the Number 79800

Seventy-Nine Thousand Eight Hundred

Basics

Value: 79799 → 79800 → 79801

Parity: even

Prime: No

Previous Prime: 79777

Next Prime: 79801

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 2 ³ × 3 × 5 ² × 7 × 19

Divisors: 1, 2, 3, 4, 5, 6, 7, 8, 10, 12

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: Yes

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011011110111000

Octal: 233670

Duodecimal: 3A220

Hexadecimal: 137b8

Square: 6368040000

Square Root: 282.4889378365107

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) = n² * (n² - 1)/2. A83374

Triangular numbers that are the product of two triangular numbers greater than 1. A188630

Triangular numbers which are products of triangular numbers larger than 1. A68143

Least hexagonal number that is the product of n hexagonal numbers greater than 1. A225066

Triangle read by rows: T(n,k) = number of homeomorphically irreducible connected labeled graphs with n edges and k vertices, n >= 0, 1 <= k <= n+1. A331437

Irregular triangle read by rows: T(n,k) = number of homeomorphically irreducible connected labeled graphs with n vertices and k edges, n >= 1, 0 <= k <= n*(n-1)/2. A331438

Square array read by antidiagonals: the n-th row lists n-gonal numbers that are products of smaller n-gonal numbers. A374370

Numbers with prime factorization p·q*r·s²*t³ (where p, q, r, s, t are distinct primes). A190111

Row sums of the triangle A045975. A204558

Semiperimeter of the unique primitive Pythagorean triple whose inradius is A000032(n) and such that its long leg and its hypotenuse are consecutive natural numbers. A380823