Properties of the Number 11215

Eleven Thousand Two Hundred Fifteen

Basics

Value: 11214 → 11215 → 11216

Parity: odd

Prime: No

Previous Prime: 11213

Next Prime: 11239

Digit Sum: 10

Digital Root: 1

Palindrome: No

Factorization: 5 × 2243

Divisors: 1, 5, 2243, 11215

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101111001111

Octal: 25717

Duodecimal: 65A7

Hexadecimal: 2bcf

Square: 125776225

Square Root: 105.90089706891061

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

Positive numbers for which the sum of digits equals the product of digits. A34710

Coefficients in expansion of ∑_{n >= 1} xⁿ/(1-xⁿ)⁴. A59358

Number of distinct means of nonempty subsets of {1,...,n}. A135342

The curvature (rounded down) of touching circles inscribed in a special way in the smaller segment of circle of radius 10/9 divided by a chord of length 4/3. A247512

Nonprimes whose sum of digits is equal to its product of digits. A66307

Number of partitions of 1/n into 4 reciprocals of positive integers. A20327

G.f. A(x) satisfies A(x) = 1/(1 - x - x⁴*A'''(x)). A386449

Records in A228407. A377925

Product of the digits of n divides the sum of the digits of n. A55931

Integers m such that (x1·x2*..xk)^x1+x2+..xk = (x1+x2+..xk)^x1·x2*..xk where x1x2..xk are the digits of m in base 10. A64158