Properties of the Number 23690

Twenty-Three Thousand Six Hundred Ninety

Basics

Value: 23689 → 23690 → 23691

Parity: even

Prime: No

Previous Prime: 23689

Next Prime: 23719

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 × 5 × 23 × 103

Divisors: 1, 2, 5, 10, 23, 46, 103, 115, 206, 230

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101110010001010

Octal: 56212

Duodecimal: 11862

Hexadecimal: 5c8a

Square: 561216100

Square Root: 153.9155612665594

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

T(n,k)=Number of nXk 0..1 arrays with no element equal to a strict majority of its horizontal and antidiagonal neighbors and with new values introduced in order 0 sequentially upwards. A279709

a(n) = ∏_d∣n prime(d). A275700

a(n) = 3·a(n-1) + 4·a(n-2) + a(n-3) with a(0)=2, a(1)=5, a(2)=22. A215100

∏_{d∣n, A007431(d) > 0} prime(A007431(d)), where A007431 is the Möbius transform of Euler's totient function. A318838

Square array read by antidiagonals in which T(n,k) is the n-th even number j with the property that the symmetric representation of σ(j) has k parts. A320537

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 873", based on the 5-celled von Neumann neighborhood. A273709

Number of n X 4 0..1 arrays with no element equal to a strict majority of its horizontal and antidiagonal neighbors and with new values introduced in order 0 sequentially upwards. A279705

Number of 7Xn 0..1 arrays with no element equal to a strict majority of its horizontal and antidiagonal neighbors and with new values introduced in order 0 sequentially upwards. A279714

a(n) = position of 3·n³ in A003072. A24970

Numbers with exactly 8 ones in binary expansion. A23690