Properties of the Number 74631

Seventy-Four Thousand Six Hundred Thirty-One

Basics

Value: 74630 → 74631 → 74632

Parity: odd

Prime: No

Previous Prime: 74623

Next Prime: 74653

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 24877

Divisors: 1, 3, 24877, 74631

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10010001110000111

Octal: 221607

Duodecimal: 37233

Hexadecimal: 12387

Square: 5569786161

Square Root: 273.1867493126268

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 (n+1)X(k+1) 0..3 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction. A250691

Number of (3+1)X(n+1) 0..3 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction. A250694

Number of (n+1) X (3+1) 0..3 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction. A250686

Number of length n+6 0..1 arrays with at most two downsteps in every n consecutive neighbor pairs. A256821

Number of (n+1)X(n+1) 0..3 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction. A250684

a(n) is the smallest k such that the sum of the first k terms of the composite-harmonic series, ∑_j=1..k 1/(j-th composite), is > n. A74631