280530315 has 72 divisors (see below), whose sum is σ = 542178000. Its totient is φ = 133384320.

The previous prime is 280530293. The next prime is 280530317. The reversal of 280530315 is 513035082.

It is not a de Polignac number, because 280530315 - 2⁶ = 280530251 is a prime.

It is not an unprimeable number, because it can be changed into a prime (280530317) by changing a digit.

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 71 ways as a sum of consecutive naturals, for example, 561936 + ... + 562434.

It is an arithmetic number, because the mean of its divisors is an integer number (7530250).

Almost surely, 2^280530315 is an apocalyptic number.

280530315 is a deficient number, since it is larger than the sum of its proper divisors (261647685).

280530315 is a wasteful number, since it uses less digits than its factorization.

280530315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585 (or 551 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 280530315 is about 16749.0392261765. The cubic root of 280530315 is about 654.6260243045.

Adding to 280530315 its reverse (513035082), we get a palindrome (793565397).

The spelling of 280530315 in words is "two hundred eighty million, five hundred thirty thousand, three hundred fifteen".