280252680 has 64 divisors (see below), whose sum is σ = 846944640. Its totient is φ = 74184192.

The previous prime is 280252669. The next prime is 280252697. The reversal of 280252680 is 86252082.

280252680 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7917 + ... + 24963.

It is an arithmetic number, because the mean of its divisors is an integer number (13233510).

Almost surely, 2^280252680 is an apocalyptic number.

280252680 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 280252680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (423472320).

280252680 is an abundant number, since it is smaller than the sum of its proper divisors (566691960).

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

280252680 is a wasteful number, since it uses less digits than its factorization.

280252680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17198 (or 17194 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 280252680 is about 16740.7490871824. The cubic root of 280252680 is about 654.4099964498.

The spelling of 280252680 in words is "two hundred eighty million, two hundred fifty-two thousand, six hundred eighty".