Properties of the Number 79040

Seventy-Nine Thousand Forty

Basics

Value: 79039 → 79040 → 79041

Parity: even

Prime: No

Previous Prime: 79039

Next Prime: 79043

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ⁶ × 5 × 13 × 19

Divisors: 1, 2, 4, 5, 8, 10, 13, 16, 19, 20

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10011010011000000

Octal: 232300

Duodecimal: 398A8

Hexadecimal: 134c0

Square: 6247321600

Square Root: 281.14053425288927

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

If X₁, ..., X_n is a partition of a 2n-set X into 2-blocks then a(n) is equal to the number of 3-subsets of X containing none of X_i, (i=1,...,n). A130809

Number of ways to place 2 nonattacking wazirs on an n X n board. A172225

Numbers k such that 10^k - prime(k) is prime. A110066

Number of points of l₁ norm n in the "diamond" lattice D^+_4. A35878

Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of max{3i+j-3,i+3j-3} (A204008). A204011

a(n) = 2ⁿ mod n³. A233442

Triangle read by rows. A generalization of unsigned Lah numbers, called L[3,2]. A290598

Numerators in the expansion of the exponential generating function (1/2)*((1 + 3·x)/x)*(1 - (1 + 3·x)^-4/3). A290603

1/4 the number of (n+1) X 8 0..2 arrays with every 2 X 2 subblock having distinct edge sums. A209381

Fractional part of 1/(1-tanh(n)) decreases monotonically to zero. A79040