280871968 has 24 divisors (see below), whose sum is σ = 595503468. Its totient is φ = 129633024.

The previous prime is 280871957. The next prime is 280871971. The reversal of 280871968 is 869178082.

It can be written as a sum of positive squares in 2 ways, for example, as 264127504 + 16744464 = 16252^2 + 4092^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 337171 + ... + 338002.

Almost surely, 2^280871968 is an apocalyptic number.

It is an amenable number.

280871968 is an abundant number, since it is smaller than the sum of its proper divisors (314631500).

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

280871968 is a wasteful number, since it uses less digits than its factorization.

280871968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675196 (or 675188 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 49.

The square root of 280871968 is about 16759.2353047506. The cubic root of 280871968 is about 654.8916690487.

The spelling of 280871968 in words is "two hundred eighty million, eight hundred seventy-one thousand, nine hundred sixty-eight".