Properties of the Number 17987

Seventeen Thousand Nine Hundred Eighty-Seven

Basics

Value: 17986 → 17987 → 17988

Parity: odd

Prime: Yes

Previous Prime: 17981

Next Prime: 17989

Digit Sum: 32

Digital Root: 5

Palindrome: No

Factorization: 17987

Divisors: 1, 17987

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 100011001000011

Octal: 43103

Duodecimal: A4AB

Hexadecimal: 4643

Square: 323532169

Square Root: 134.11562175973387

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) is the smallest b > 1 such that p = prime(n) satisfies b^p-1 == 1 (mod p³). A249275

Primes p such that p² + 4 and p² + 10 are also primes. A237890

Numbers that are the sum of eight fourth powers in eight or more ways. A345583

Numbers that are the sum of eight fourth powers in nine or more ways. A345584

Primes p such that p1 = ceiling(p/2) + p is prime and p2 = floor(p1/2) + p1 is prime. A158714

Numbers that are the sum of eight fourth powers in ten or more ways. A345585

Numbers that are the sum of eight fourth powers in exactly ten ways. A345842

Primes with digit sum = 32. A106768

a(n) = (1/2)*(n³ - 6·n² + 13·n - 6). A158498

Primes equal to a centered triangular number plus 1. A285809