A perfect number equals the sum of its proper divisors — 6 (1+2+3) and 28 (1+2+4+7+14) are the first two.
Fact #8545
👍 0 · 👎 0
More General Facts
Magpies have passed the mirror self-recognition test.
Fact #1306 · General
Nothing can travel faster than light in a vacuum.
Fact #2081 · General
A falcon can dive at speeds over 200 mph.
Fact #412 · General
The city of Herculaneum was also buried by Vesuvius.
Fact #1662 · General
The Maya city of Tikal was once a powerful urban center.
Fact #1639 · General
Social norms influence everyday behavior.
Fact #978 · General
The phalanx formation required coordination and discipline.
Fact #1446 · General
Your consciousness observes.
Fact #2319 · General
Want more facts?
We have over 11,491 facts across 16 categories.