Properties of the Number 90070

Ninety Thousand Seventy

Basics

Value: 90069 → 90070 → 90071

Parity: even

Prime: No

Previous Prime: 90067

Next Prime: 90071

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 × 5 × 9007

Divisors: 1, 2, 5, 10, 9007, 18014, 45035, 90070

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10101111111010110

Octal: 257726

Duodecimal: 4415A

Hexadecimal: 15fd6

Square: 8112604900

Square Root: 300.1166439902992

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

a(n) = a(1) + a(2) + ... + a(n-1) + a(m) for n >= 4, where m = 2·n - 2 - 2^p+1 and p is the unique integer such that 2^p < n-1 <= 2^p+1, with a(1) = 1, a(2) = 2 and a(3) = 4. A49963

Number of length-n binary strings that are the concatenation of two nonempty palindromes. A370410

Expansion of ∏_{m >= 1} (1 + x^m); number of partitions of n into distinct parts; number of partitions of n into odd parts. A9

Irregular triangle read by rows: T(n,k) = binomial(n-k, k), n >= 0, 0 <= k <= floor(n/2); or, coefficients of (one version of) Fibonacci polynomials. A11973

Number of partially ordered sets ("posets") with n unlabeled elements. A112

Triangle T(n,k) of coefficients of Lucas (or Cardan) polynomials. A34807

Coefficients of the '5th-order' mock θ function chi₁(q). A53263

Coefficients of the '5th-order' mock θ function psi₁(q). A53261

Coefficients of the '5th-order' mock θ function phi₀(q). A53258

Coefficients of the '5th-order' mock θ function φ(q). A53266