Properties of the Number -1970

Nine Hundred Seventy

Basics

Value: -1971 → -1970 → -1969

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 × 5 × 197

Divisors: 1, 2, 5, 10, 197, 394, 985, 1970

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -11110110010

Octal: -3662

Duodecimal: -1182

Hexadecimal: -7b2

Square: 3880900

Square Root: 44.384682042344295

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) = Pell(n)*A113973(n) for n>=1, with a(0)=1, where A113973 lists the coefficients in φ(x³)³/φ(x) and φ() is a Ramanujan θ function. A209449

a(0) = -1, otherwise a(n) = (-1)ⁿ*(n³ - 15·n² + 2·n - 12)/6. A173248

Expansion of a modular function for gamma₀(6). A6708

Numbers m such that the Bernoulli number B_m has denominator 66. A51230

Numbers that are the sum of 10 positive 6th powers. A3366

Number of integer partitions of n that cannot be partitioned into two or more blocks with equal sums. A321451

Table a(d,m) of number of points of L1 norm m in cubic lattice Z^d, read by antidiagonals (d >= 1, m >= 0). A35607

a(n) = 2·a(n-1) + a(n-2), with a(0) = 1, a(1) = 2, a(2) = 4. A52542

Numbers n such that the decimal expansions of both n and n² have 0 as smallest digit and 9 as largest digit. A256709

Number of ordered pairs (i,j), 0 <= i,j < n, for which (i & j) is nonzero, where & is the bitwise AND operator. A80572