280530732 has 24 divisors (see below), whose sum is σ = 661055472. Its totient is φ = 92584000.

The previous prime is 280530703. The next prime is 280530779. The reversal of 280530732 is 237035082.

It is a self number, because there is not a number n which added to its sum of digits gives 280530732.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114519 + ... + 116942.

It is an arithmetic number, because the mean of its divisors is an integer number (27543978).

Almost surely, 2^280530732 is an apocalyptic number.

It is an amenable number.

280530732 is an abundant number, since it is smaller than the sum of its proper divisors (380524740).

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

280530732 is a wasteful number, since it uses less digits than its factorization.

280530732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231569 (or 231567 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 280530732 is about 16749.0516746471. The cubic root of 280530732 is about 654.6263486650.

The spelling of 280530732 in words is "two hundred eighty million, five hundred thirty thousand, seven hundred thirty-two".