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Properties of the Number -157080

One Hundred Fifty-Seven Thousand Eighty

Basics

Value: -157081 → -157080 → -157079

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 3 × 3 × 5 × 7 × 11 × 17

Divisors: 1, 2, 3, 4, 5, 6, 7, 8, 10, 11

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100110010110011000

Octal: -462630

Duodecimal: -76AA0

Hexadecimal: -26598

Square: 24674126400

Square Root: 396.333193159493

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

Coefficient triangle for certain polynomials N(2; n,x) (rising powers of x). A62991
Tritriangular numbers: a(n) = binomial(binomial(n,2),2) = n*(n+1)*(n-1)*(n-2)/8. A50534
Smallest triangular number divisible by exactly n triangular numbers. A76983
Numbers n such that the multiplicative group modulo n is the direct product of 7 cyclic groups. A272597
Number of ways to place 3 nonattacking kings on a 3 X n board. A172202
Triangle read by rows: T(n, k) = binomial(2·n, k-1)*binomial(2·n-k-1, n-k)/n for n, k >= 1, and T(n, 0) = 0n. A94385
Positive numbers m such that m2 - 1 divides 2m - 1. A247219
Expansion of g.f. A(x,y) satisfying A(x,y) = 1 + x·A(x,y)/(1 - x·y * A(x,y))2, as a triangle of coefficients T(n,k) of xn*yk in A(x,y), read by rows n >= 0. A365770
Least common multiple of {d-1: d > 1 and d divides n}. A84190
Triangular numbers that set a new record for number of triangular divisors. A84260