280863041 has 4 divisors (see below), whose sum is σ = 288453972. Its totient is φ = 273272112.

The previous prime is 280863019. The next prime is 280863053. The reversal of 280863041 is 140368082.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 259886641 + 20976400 = 16121^2 + 4580^2 .

It is a cyclic number.

It is not a de Polignac number, because 280863041 - 2⁶ = 280862977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 280862989 and 280863007.

It is not an unprimeable number, because it can be changed into a prime (280863071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3795410 + ... + 3795483.

It is an arithmetic number, because the mean of its divisors is an integer number (72113493).

Almost surely, 2^280863041 is an apocalyptic number.

It is an amenable number.

280863041 is a deficient number, since it is larger than the sum of its proper divisors (7590931).

280863041 is an equidigital number, since it uses as much as digits as its factorization.

280863041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7590930.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 280863041 is about 16758.9689718670. The cubic root of 280863041 is about 654.8847307986.

The spelling of 280863041 in words is "two hundred eighty million, eight hundred sixty-three thousand, forty-one".