280213539904 has 21 divisors (see below), whose sum is σ = 556057146837. Its totient is φ = 140104652544.

The previous prime is 280213539871. The next prime is 280213539913. The reversal of 280213539904 is 409935312082.

The square root of 280213539904 is 529352.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 136420899904 + 143792640000 = 369352^2 + 379200^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 4201732 + ... + 4267900.

Almost surely, 2^280213539904 is an apocalyptic number.

280213539904 is the 529352-nd square number.

It is an amenable number.

280213539904 is a deficient number, since it is larger than the sum of its proper divisors (275843606933).

280213539904 is an frugal number, since it uses more digits than its factorization.

280213539904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132350 (or 66171 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 46.

The spelling of 280213539904 in words is "two hundred eighty billion, two hundred thirteen million, five hundred thirty-nine thousand, nine hundred four".