Properties of the Number 13950

Thirteen Thousand Nine Hundred Fifty

Basics

Value: 13949 → 13950 → 13951

Parity: even

Prime: No

Previous Prime: 13933

Next Prime: 13963

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 5 ² × 31

Divisors: 1, 2, 3, 5, 6, 9, 10, 15, 18, 25

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: Yes

Tetrahedral: No

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Representations

Binary: 11011001111110

Octal: 33176

Duodecimal: 80A6

Hexadecimal: 367e

Square: 194602500

Square Root: 118.11011811017717

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

Pentagonal pyramidal numbers: a(n) = n²*(n+1)/2. A2411

a(n) = (2·n + 1)*(5·n + 1). A33571

Subset of A020342 (vampire numbers, definition 1) listing numbers which have more than one such representation of the desired form. A144563

Even heptagonal numbers (A000566). A14640

Even pentagonal pyramidal numbers. A15224

Partial sums of ∑_k=1..n n/gcd(n,k), or partial sums of ∑_d∣n d*φ(d) (see A057660). A174405

a(n) = n*(2*(n - 2)*n + (-1)ⁿ + 3)/4. A323724

Primitive terms of A359565: terms of A359565 with no proper divisor in A359565. A359566

Numbers m such that 20·m + 1, 80·m + 1, 100·m + 1, and 200·m + 1 are all primes. A372186

a(n) = n*(29·n + 1)/2. A22287