Properties of the Number 23728

Twenty-Three Thousand Seven Hundred Twenty-Eight

Basics

Value: 23727 → 23728 → 23729

Parity: even

Prime: No

Previous Prime: 23719

Next Prime: 23741

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 ⁴ × 1483

Divisors: 1, 2, 4, 8, 16, 1483, 2966, 5932, 11864, 23728

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101110010110000

Octal: 56260

Duodecimal: 11894

Hexadecimal: 5cb0

Square: 563017984

Square Root: 154.03895611175764

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 ways the set {1,2,...,n} can be split into three subsets of equal sums. A112972

G.f. of the z¹ coefficients of the FP1 in the second column of the A156921 matrix. A156928

Numbers n such that 6·10ⁿ + 5·R_n - 4 is prime, where R_n = 11...1 is the repunit (A002275) of length n. A103038

Numbers n such that σ(σ(φ(n))) = σ(σ(n)). A172466

Number of arrangements of 4 nonzero numbers x(i) in -n..n with the sum of div(x(i),x(i+1)), where div(a,b)=a/b produces the integer quotient implying a nonnegative remainder, equal to zero. A190073

Irregular triangle read by rows where T(n,k) is the number of set partitions of {1,...,n} with all block-sums equal to d, where d is the k-th divisor of n*(n+1)/2 that is >= n. A320438

tanh(sec(x)*arcsin(x))=x+2/3!*x³-20/5!*x⁵-1104/7!*x⁷-23728/9!*x⁹... A12790

Number of ways to place 5 points on a triangular grid of side n so that no two of them are adjacent. A239571

Numbers with exactly 3 1's in base 5 expansion. A23728