280388096 has 40 divisors (see below), whose sum is σ = 561995280. Its totient is φ = 139752448.

The previous prime is 280388093. The next prime is 280388131. The reversal of 280388096 is 690883082.

It is not an unprimeable number, because it can be changed into a prime (280388093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213875 + ... + 215181.

It is an arithmetic number, because the mean of its divisors is an integer number (14049882).

Almost surely, 2^280388096 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 280388096, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280997640).

280388096 is an abundant number, since it is smaller than the sum of its proper divisors (281607184).

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

280388096 is an equidigital number, since it uses as much as digits as its factorization.

280388096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1744 (or 1728 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 280388096 is about 16744.7931011404. The cubic root of 280388096 is about 654.5153814840.

The spelling of 280388096 in words is "two hundred eighty million, three hundred eighty-eight thousand, ninety-six".