Properties of the Number 78487

Seventy-Eight Thousand Four Hundred Eighty-Seven

Basics

Value: 78486 → 78487 → 78488

Parity: odd

Prime: Yes

Previous Prime: 78479

Next Prime: 78497

Digit Sum: 34

Digital Root: 7

Palindrome: Yes

Factorization: 78487

Divisors: 1, 78487

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10011001010010111

Octal: 231227

Duodecimal: 39507

Hexadecimal: 13297

Square: 6160209169

Square Root: 280.1553140670367

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

Palindromes of the form 3n + 1 where n is also a palindrome: palindromes arising in A083829. A83830

Primes having only {4, 7, 8} as digits. A385795

Lucky numbers that are both palindromic and prime. A31881

Palindromic prime units W appearing four times in second-order fractal palindromic primes WxWmWxW, where part WxW is also a palindromic prime. A82599

Palindromic primes that yield a prime when sandwiched between two 3's. (Prefixing and suffixing a -three' on both sides yields another pal prime). A88270

Palindromic primes starting with a digit 7. A222727

Least prime p such that π(p·n) = π(q·n)² for some prime q, where π(x) denotes the number of primes not exceeding x. A260140

Palindromic primes n such that the period of 1/n is a palindrome. A33938

Smallest palindromic prime with digit sum = n, or 0 if no such prime exists. A70245

a(n) = smallest palindromic prime that begins with A082768(n) and contains more than twice the number of digits in A082768(n), or 0 if no such number exists. A82770