Properties of the Number 86940

Eighty-Six Thousand Nine Hundred Forty

Basics

Value: 86939 → 86940 → 86941

Parity: even

Prime: No

Previous Prime: 86939

Next Prime: 86951

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 ² × 3 ³ × 5 × 7 × 23

Divisors: 1, 2, 3, 4, 5, 6, 7, 9, 10, 12

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101001110011100

Octal: 251634

Duodecimal: 42390

Hexadecimal: 1539c

Square: 7558563600

Square Root: 294.85589700733476

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

Triangle read by rows, the Bell transform of (n+2)!/2 without column 0. A46089

Triangle read by rows: matrix cube of the Stirling2 triangle A008277. A39811

Number of set partitions of [n] with increasing block sizes. A275312

Principal diagonal of the convolution array A213819. A213820

Triangle read by rows: matrix 4th power of the Stirling2 triangle A008277. A39812

a(n) = ∑_{k=1..prime(n)-1} floor(k³/prime(n)). A78837

Numbers with prime factorization p·q*r·s²*t³ (where p, q, r, s, t are distinct primes). A190111

a(0) = 1, a(1) = 1 and for n >= 2, a(n) = floor(4·a(n-2) * a(n-1) / (a(n-2) + a(n-1))). A93335

Triangle read by rows: the coefficients of polynomials (1/3^m-n) * ∑_k=0..m kⁿ * 2^m-k * binomial(m,k) in the variable m. A383140

Expansion of ∏_{m >= 1} (1-m·q^m)¹². A22672