280250328 has 32 divisors (see below), whose sum is σ = 701757360. Its totient is φ = 93265920.

The previous prime is 280250317. The next prime is 280250329. The reversal of 280250328 is 823052082.

It is a junction number, because it is equal to n+sod(n) for n = 280250295 and 280250304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280250329) 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 7 ways as a sum of consecutive naturals, for example, 6276 + ... + 24492.

Almost surely, 2^280250328 is an apocalyptic number.

It is an amenable number.

280250328 is an abundant number, since it is smaller than the sum of its proper divisors (421507032).

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

280250328 is a wasteful number, since it uses less digits than its factorization.

280250328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18867 (or 18863 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 280250328 is about 16740.6788392825. The cubic root of 280250328 is about 654.4081657488.

The spelling of 280250328 in words is "two hundred eighty million, two hundred fifty thousand, three hundred twenty-eight".