280748227 has 2 divisors, whose sum is σ = 280748228. Its totient is φ = 280748226.

The previous prime is 280748219. The next prime is 280748239. The reversal of 280748227 is 722847082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 280748227 - 2³ = 280748219 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 280748227.

It is not a weakly prime, because it can be changed into another prime (280748207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140374113 + 140374114.

It is an arithmetic number, because the mean of its divisors is an integer number (140374114).

Almost surely, 2^280748227 is an apocalyptic number.

280748227 is a deficient number, since it is larger than the sum of its proper divisors (1).

280748227 is an equidigital number, since it uses as much as digits as its factorization.

280748227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100352, while the sum is 40.

The square root of 280748227 is about 16755.5431723355. The cubic root of 280748227 is about 654.7954818617.

The spelling of 280748227 in words is "two hundred eighty million, seven hundred forty-eight thousand, two hundred twenty-seven".