Properties of the Number 70020

Seventy Thousand Twenty

Basics

Value: 70019 → 70020 → 70021

Parity: even

Prime: No

Previous Prime: 70019

Next Prime: 70039

Digit Sum: 9

Digital Root: 9

Palindrome: No

Factorization: 2 ² × 3 ² × 5 × 389

Divisors: 1, 2, 3, 4, 5, 6, 9, 10, 12, 15

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10001000110000100

Octal: 210604

Duodecimal: 34630

Hexadecimal: 11184

Square: 4902800400

Square Root: 264.61292485439935

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 integer partitions of n with at least one part of odd multiplicity that is not the first or last. A349061

Number of multisets of nonempty words with a total of n letters over octonary alphabet such that within each prefix of a word every letter of the alphabet is at least as frequent as the subsequent alphabet letter. A293738

Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 30", based on the 5-celled von Neumann neighborhood. A285538

On a spirally numbered square grid, with labels starting at 1, this is the number of steps that an (n,n+1) leaper makes before getting trapped, or -1 if it never gets trapped. A343178

Primitive terms of A388022: numbers k that satisfy σ(k) AND 3·k = 3·k, but none of whose proper divisors satisfy the same condition. A388025

a(n) = ∑_k=1..n σ(n·k). A372710

Numbers whose base-4 representation has exactly 9 runs. A43600

Numbers k such that number of runs in the base 4 representation of k is congruent to 0 mod 9. A43858

Numbers k such that number of runs in the base 4 representation of k is congruent to 9 mod 10. A43876

Numbers such that the decimal digits of σ(n) are a permutation of those of σ(n)-n. A277114