Properties of the Number 23038

Twenty-Three Thousand Thirty-Eight

Basics

Value: 23037 → 23038 → 23039

Parity: even

Prime: No

Previous Prime: 23029

Next Prime: 23039

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 × 11519

Divisors: 1, 2, 11519, 23038

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101100111111110

Octal: 54776

Duodecimal: 113BA

Hexadecimal: 59fe

Square: 530749444

Square Root: 151.78273946664686

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

Numbers k such that k·2^m-1 are composites for all exponents m in the range 0<=m<=k. A61154

Parenthesized one way gives the powers of 2: (1), (2), (1+3), ..., another way the powers of 3: (1), (2+1), (3+6), .... A6895

Smallest initial value k that reaches 1 in n steps when iterating the map m -> rad(m)-1, where rad(m) is the squarefree kernel of m (A007947). A75426

Numbers n such that φ(2n-1) = σ(n). A67230

a(0) = 0, a(1) = 1 and for n >= 2, a(n) = floor(sqrt(2 * (a(n-2)² + a(n-1)²))). A93332

Positive integers that have exactly ten representations of the form 1 + p1 * (1 + p2* ... * (1 + p_j)...), where [p1, ..., p_j] is a (possibly empty) list of distinct primes. A317400

Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 78 ones. A31846

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 382", based on the 5-celled von Neumann neighborhood. A271541

Numbers n such that σ(n)=φ(n·bigomega(n)-1). A67877

Triangle read by rows: T(n,m)=floor[(m/n)*row(n)]. A152969