280752532 has 12 divisors (see below), whose sum is σ = 496382740. Its totient is φ = 138928896.

The previous prime is 280752529. The next prime is 280752533. The reversal of 280752532 is 235257082.

280752532 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 226081296 + 54671236 = 15036^2 + 7394^2 .

It is a super-2 number, since 2×280752532² = 157643968448822048, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280752533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 361407 + ... + 362182.

Almost surely, 2^280752532 is an apocalyptic number.

It is an amenable number.

280752532 is a deficient number, since it is larger than the sum of its proper divisors (215630208).

280752532 is a wasteful number, since it uses less digits than its factorization.

280752532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723690 (or 723688 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 280752532 is about 16755.6716367921. The cubic root of 280752532 is about 654.7988287278.

The spelling of 280752532 in words is "two hundred eighty million, seven hundred fifty-two thousand, five hundred thirty-two".