280780868272 has 20 divisors (see below), whose sum is σ = 551465166520. Its totient is φ = 138467276928.

The previous prime is 280780868267. The next prime is 280780868287. The reversal of 280780868272 is 272868087082.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120196122 + ... + 120198457.

It is an arithmetic number, because the mean of its divisors is an integer number (27573258326).

Almost surely, 2^280780868272 is an apocalyptic number.

It is an amenable number.

280780868272 is a deficient number, since it is larger than the sum of its proper divisors (270684298248).

280780868272 is a wasteful number, since it uses less digits than its factorization.

280780868272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240394660 (or 240394654 counting only the distinct ones).

The product of its (nonzero) digits is 9633792, while the sum is 58.

The spelling of 280780868272 in words is "two hundred eighty billion, seven hundred eighty million, eight hundred sixty-eight thousand, two hundred seventy-two".