280250530 has 16 divisors (see below), whose sum is σ = 576515520. Its totient is φ = 96085872.

The previous prime is 280250489. The next prime is 280250569. The reversal of 280250530 is 35052082.

It is a junction number, because it is equal to n+sod(n) for n = 280250495 and 280250504.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2001720 + ... + 2001859.

It is an arithmetic number, because the mean of its divisors is an integer number (36032220).

Almost surely, 2^280250530 is an apocalyptic number.

280250530 is an abundant number, since it is smaller than the sum of its proper divisors (296264990).

280250530 is a wasteful number, since it uses less digits than its factorization.

280250530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4003593.

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

The square root of 280250530 is about 16740.6848724895. The cubic root of 280250530 is about 654.4083229778.

The spelling of 280250530 in words is "two hundred eighty million, two hundred fifty thousand, five hundred thirty".