280532116 has 12 divisors (see below), whose sum is σ = 491422932. Its totient is φ = 140125568.

The previous prime is 280532089. The next prime is 280532117. The reversal of 280532116 is 611235082.

It can be written as a sum of positive squares in 2 ways, for example, as 137968516 + 142563600 = 11746^2 + 11940^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280532117) by changing a digit.

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, 30565 + ... + 38668.

It is an arithmetic number, because the mean of its divisors is an integer number (40951911).

Almost surely, 2^280532116 is an apocalyptic number.

It is an amenable number.

280532116 is a deficient number, since it is larger than the sum of its proper divisors (210890816).

280532116 is a wasteful number, since it uses less digits than its factorization.

280532116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70250 (or 70248 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 280532116 is about 16749.0929903682. The cubic root of 280532116 is about 654.6274251976.

Adding to 280532116 its reverse (611235082), we get a palindrome (891767198).

The spelling of 280532116 in words is "two hundred eighty million, five hundred thirty-two thousand, one hundred sixteen".