Properties of the Number 19505

Nineteen Thousand Five Hundred Five

Basics

Value: 19504 → 19505 → 19506

Parity: odd

Prime: No

Previous Prime: 19501

Next Prime: 19507

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 5 × 47 × 83

Divisors: 1, 5, 47, 83, 235, 415, 3901, 19505

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 100110000110001

Octal: 46061

Duodecimal: B355

Hexadecimal: 4c31

Square: 380445025

Square Root: 139.66030216206752

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 integer partitions of n whose first differences (assuming the last part is zero) are not unimodal. A332284

Number of recursively anti-transitive rooted trees with n nodes. A324765

Triangle read by rows: T(n,k) is the number of partitions of the set {1,2,...,n}, having exactly k blocks consisting only odd entries (0<=k<=ceiling(n/2)). A124420

Integer part of cube root of product of first n primes. A127600

Power ceiling-floor sequence of sqrt(5). A218982

Expansion of 1/∏_k>=1 (1 - x^k)^{valuation(k,4} + 1). A373295

Sums of 5 distinct powers of 5. A38477

Numerator of Sum[ (-1)^k+1 * 1/2^Prime[k], {k,1,n} ]. A122150

Record values in A216476. A306564

Icosagonal numbers for which the sum of the digits is also an icosagonal number. A117799