Properties of the Number 38157

Thirty-Eight Thousand One Hundred Fifty-Seven

Basics

Value: 38156 → 38157 → 38158

Parity: odd

Prime: No

Previous Prime: 38153

Next Prime: 38167

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 7 × 23 × 79

Divisors: 1, 3, 7, 21, 23, 69, 79, 161, 237, 483

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1001010100001101

Octal: 112415

Duodecimal: 1A0B9

Hexadecimal: 950d

Square: 1455956649

Square Root: 195.33816831331248

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

Number of unrooted quartic trees with n (unlabeled) nodes and possessing a centroid; number of n-carbon alkanes C(n)H(2n +2) with a centroid ignoring stereoisomers. A10372

Least k > 1 such that kⁿ is a twin rank (cf. A002822: 6·kⁿ +- 1 are twin primes). A326230

Indices where the cumulative sum of cos(2k+1)^2k+1 reaches a record high value. A389559

Numbers n such that μ(n) + μ(n+1) + μ(n+2) + μ(n+3) + μ(n+4) + μ(n+5) + μ(n+6) = 6. A82967

a(n) is the least nonnegative integer k such that (k² + prime(n)²)/2 is prime but (k² + prime(i)²)/2 is not prime for i < n. A358804

Primitive non-solvable numbers: elements of A056866 not divisible by any earlier term. A257146

a(n) = n! * ∑_k=1..n-2 1/k!. A38157