280305227 has 8 divisors (see below), whose sum is σ = 286818816. Its totient is φ = 273814632.

The previous prime is 280305203. The next prime is 280305241. The reversal of 280305227 is 722503082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 280305227 - 2¹⁸ = 280043083 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 280305227.

It is not an unprimeable number, because it can be changed into a prime (280308227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20258 + ... + 31160.

It is an arithmetic number, because the mean of its divisors is an integer number (35852352).

Almost surely, 2^280305227 is an apocalyptic number.

280305227 is a deficient number, since it is larger than the sum of its proper divisors (6513589).

280305227 is a wasteful number, since it uses less digits than its factorization.

280305227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11497.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 280305227 is about 16742.3184475747. The cubic root of 280305227 is about 654.4508942248.

The spelling of 280305227 in words is "two hundred eighty million, three hundred five thousand, two hundred twenty-seven".