280012800000 has 360 divisors, whose sum is σ = 933799732992. Its totient is φ = 74629120000.

The previous prime is 280012799959. The next prime is 280012800037. The reversal of 280012800000 is 8210082.

It is a self number, because there is not a number n which added to its sum of digits gives 280012800000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 153599089 + ... + 153600911.

Almost surely, 2^280012800000 is an apocalyptic number.

280012800000 is a gapful number since it is divisible by the number (20) 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 280012800000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (466899866496).

280012800000 is an abundant number, since it is smaller than the sum of its proper divisors (653786932992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

280012800000 is an frugal number, since it uses more digits than its factorization.

280012800000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1879 (or 1833 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The spelling of 280012800000 in words is "two hundred eighty billion, twelve million, eight hundred thousand".