Properties of the Number 78190

Seventy-Eight Thousand One Hundred Ninety

Basics

Value: 78189 → 78190 → 78191

Parity: even

Prime: No

Previous Prime: 78179

Next Prime: 78191

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 × 5 × 7 × 1117

Divisors: 1, 2, 5, 7, 10, 14, 35, 70, 1117, 2234

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011000101101110

Octal: 230556

Duodecimal: 392BA

Hexadecimal: 1316e

Square: 6113676100

Square Root: 279.62474854704834

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

Triangle read by rows: T(n,k) is the number of even permutations of {1,2,...,n} having k descents (n >= 1, k >= 0). A145882

Triangle T(n,k) read by rows: number of permutations in [n] with exactly k ascents that have an even number of inversions. A128612

n·a(n+1) = (2·n² + 3·n + 2)*a(n) - (n² - n - 2)*a(n-1) with n>1, a(0)=0, a(1)=1. A259900

Primes of the form A004154(n) - 1. A78190

a(n) = n⁵*(n⁴ + 1)/2. A168372

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