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Properties of the Number 7998

Seven Thousand Nine Hundred Ninety-Eight

Basics

Value: 7997 → 7998 → 7999

Parity: even

Prime: No

Previous Prime: 7993

Next Prime: 8009

Digit Sum: 33

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 31 × 43

Divisors: 1, 2, 3, 6, 31, 43, 62, 86, 93, 129

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 1111100111110

Octal: 17476

Duodecimal: 4766

Hexadecimal: 1f3e

Square: 63968004

Square Root: 89.43153806124549

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

Numbers k such that k divides 1 + ∑j=1..k prime(j)2 = 1 + A024450(k). A128166
Number of rucksack partitions of n: every consecutive constant subsequence has a different sum. A353864
Smallest even number with digit sum n. A69532
Sums of distinct powers of 6. A33043
Numbers with rounded up arithmetic mean of digits = 9. A178369
Expansion of ∑n>=0 (qn / ∏k=1..n+5 (1 - qk)). A35301
Numbers k such that k divides the sum of digits of all numbers from 1 to k. A114136
Number of separate orbits/cycles to which the Catalan bijections A069767/A069768 partition each A000108(n) structures encoded in the range [A014137(n-1)..A014138(n-1)] of the sequence A014486/A063171. A73431
Starting numbers for which the RATS sequence has eventual period 14. A114615
Base-6 digits are, in order, the first n terms of the periodic sequence with initial period 1,0. A33116