280883641 has 4 divisors (see below), whose sum is σ = 281920384. Its totient is φ = 279846900.

The previous prime is 280883569. The next prime is 280883657. The reversal of 280883641 is 146388082.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 280883641 - 2⁷ = 280883513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 280883594 and 280883603.

It is not an unprimeable number, because it can be changed into a prime (280889641) 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, 517965 + ... + 518506.

It is an arithmetic number, because the mean of its divisors is an integer number (70480096).

Almost surely, 2^280883641 is an apocalyptic number.

It is an amenable number.

280883641 is a deficient number, since it is larger than the sum of its proper divisors (1036743).

280883641 is a wasteful number, since it uses less digits than its factorization.

280883641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1036742.

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

The square root of 280883641 is about 16759.5835568787. The cubic root of 280883641 is about 654.9007413253.

The spelling of 280883641 in words is "two hundred eighty million, eight hundred eighty-three thousand, six hundred forty-one".