280305230 has 16 divisors (see below), whose sum is σ = 509449824. Its totient is φ = 111033120.

The previous prime is 280305203. The next prime is 280305241. The reversal of 280305230 is 32503082.

It is a junction number, because it is equal to n+sod(n) for n = 280305196 and 280305205.

It is a congruent number.

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, 135041 + ... + 137100.

It is an arithmetic number, because the mean of its divisors is an integer number (31840614).

Almost surely, 2^280305230 is an apocalyptic number.

280305230 is a deficient number, since it is larger than the sum of its proper divisors (229144594).

280305230 is a wasteful number, since it uses less digits than its factorization.

280305230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272251.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 280305230 is about 16742.3185371680. The cubic root of 280305230 is about 654.4508965596.

It can be divided in two parts, 2803052 and 30, that added together give a palindrome (2803082).

The spelling of 280305230 in words is "two hundred eighty million, three hundred five thousand, two hundred thirty".