280440360448 has 40 divisors (see below), whose sum is σ = 562245685848. Its totient is φ = 139741538304.

The previous prime is 280440360443. The next prime is 280440360457. The reversal of 280440360448 is 844063044082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280440360443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 784686 + ... + 1084717.

Almost surely, 2^280440360448 is an apocalyptic number.

It is an amenable number.

280440360448 is an abundant number, since it is smaller than the sum of its proper divisors (281805325400).

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

280440360448 is an equidigital number, since it uses as much as digits as its factorization.

280440360448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1869714 (or 1869698 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 43.

The spelling of 280440360448 in words is "two hundred eighty billion, four hundred forty million, three hundred sixty thousand, four hundred forty-eight".