Properties of the Number 11975

Eleven Thousand Nine Hundred Seventy-Five

Basics

Value: 11974 → 11975 → 11976

Parity: odd

Prime: No

Previous Prime: 11971

Next Prime: 11981

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 5 ² × 479

Divisors: 1, 5, 25, 479, 2395, 11975

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 10111011000111

Octal: 27307

Duodecimal: 6B1B

Hexadecimal: 2ec7

Square: 143400625

Square Root: 109.43034314119645

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

Let p = n-th prime == 3 mod 4; a(n) = (sum of quadratic nonresidues mod p) - (sum of quadratic residues mod p). A282037

Starts of runs of 3 consecutive integers that are all terms in A381581. A381583

Positive numbers k such that -k, -(k + 1), and -(k + 2) are 3 consecutive negative negaFibonacci-Niven numbers (A331088). A331090

Products of 3 evil primes (A027699) p,q,r, such that numbers p·q, p·r, q·r, and p·q*r are odious (A000069). A230353

Numbers whose base-5 representation contains exactly three 0's and two 4's. A45216

Covering numbers C(n,3,2). A11975

Numbers whose sum of divisors is divisible by 10. A297575

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