It is a tau number, because it is divible by the number of its divisors (360).
It is a congruent number.
Almost surely, 21285977600 is an apocalyptic number.
1285977600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 1285977600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2399405580).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1285977600 is an frugal number, since it uses more digits than its factorization.
1285977600 is an evil number, because the sum of its binary digits is even.
The square root of 1285977600 is about 35860.5298343457. The cubic root of 1285977600 is about 1087.4545997694.
The spelling of 1285977600 in words is "one billion, two hundred eighty-five million, nine hundred seventy-seven thousand, six hundred".