280085295380 has 24 divisors (see below), whose sum is σ = 641649949920. Its totient is φ = 101849198240.

The previous prime is 280085295379. The next prime is 280085295389. The reversal of 280085295380 is 83592580082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280085295389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 636557270 + ... + 636557709.

It is an arithmetic number, because the mean of its divisors is an integer number (26735414580).

Almost surely, 2^280085295380 is an apocalyptic number.

280085295380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

280085295380 is an abundant number, since it is smaller than the sum of its proper divisors (361564654540).

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

280085295380 is a wasteful number, since it uses less digits than its factorization.

280085295380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1273114999 (or 1273114997 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 50.

The spelling of 280085295380 in words is "two hundred eighty billion, eighty-five million, two hundred ninety-five thousand, three hundred eighty".