280848361 has 4 divisors (see below), whose sum is σ = 281862532. Its totient is φ = 279834192.

The previous prime is 280848353. The next prime is 280848473. The reversal of 280848361 is 163848082.

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 52838361 + 228010000 = 7269^2 + 15100^2 .

It is a cyclic number.

It is not a de Polignac number, because 280848361 - 2³ = 280848353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (280848341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 506670 + ... + 507223.

It is an arithmetic number, because the mean of its divisors is an integer number (70465633).

Almost surely, 2^280848361 is an apocalyptic number.

It is an amenable number.

280848361 is a deficient number, since it is larger than the sum of its proper divisors (1014171).

280848361 is a wasteful number, since it uses less digits than its factorization.

280848361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1014170.

The product of its (nonzero) digits is 73728, while the sum is 40.

The square root of 280848361 is about 16758.5309917069. The cubic root of 280848361 is about 654.8733208776.

The spelling of 280848361 in words is "two hundred eighty million, eight hundred forty-eight thousand, three hundred sixty-one".