280052530 has 16 divisors (see below), whose sum is σ = 513606744. Its totient is φ = 109907200.

The previous prime is 280052467. The next prime is 280052561. The reversal of 280052530 is 35250082.

It can be written as a sum of positive squares in 4 ways, for example, as 279458089 + 594441 = 16717^2 + 771^2 .

It is a junction number, because it is equal to n+sod(n) for n = 280052495 and 280052504.

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 7 ways as a sum of consecutive naturals, for example, 263671 + ... + 264730.

Almost surely, 2^280052530 is an apocalyptic number.

280052530 is a deficient number, since it is larger than the sum of its proper divisors (233554214).

280052530 is a wasteful number, since it uses less digits than its factorization.

280052530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528461.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 280052530 is about 16734.7700910410. The cubic root of 280052530 is about 654.2541711732.

The spelling of 280052530 in words is "two hundred eighty million, fifty-two thousand, five hundred thirty".