Properties of the Number 11240

Eleven Thousand Two Hundred Forty

Basics

Value: 11239 → 11240 → 11241

Parity: even

Prime: No

Previous Prime: 11239

Next Prime: 11243

Digit Sum: 8

Digital Root: 8

Palindrome: No

Factorization: 2 ³ × 5 × 281

Divisors: 1, 2, 4, 5, 8, 10, 20, 40, 281, 562

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101111101000

Octal: 25750

Duodecimal: 6608

Hexadecimal: 2be8

Square: 126337600

Square Root: 106.01886624558857

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 stacks, or planar partitions of n; also number of weakly unimodal compositions of n. A1523

Number of subset-sums of integer partitions of n. A304792

Number of integer partitions of n into an odd number of parts, the greatest of which is odd. A340385

Multiples of 8 with digit sum 8. A69543

Number of ways to write n as an ordered sum of 5 squarefree numbers. A341065

Sum of the first 2n+1 primes. A109723

Number of partitions p of n such that if h = min(p), then h is an (h,2)-separator of p; see Comments. A239729

Number of integer partitions of n in which the even parts appear as often at even positions as at odd positions. A300787

Starts of runs of 3 consecutive integers that are all terms in A381581. A381583

a(n) = ∑_i=0..n digsum₃(i)⁴, where digsum₃(i) = A053735(i). A231505