280463668 has 24 divisors (see below), whose sum is σ = 498828960. Its totient is φ = 137959200.

The previous prime is 280463647. The next prime is 280463681. The reversal of 280463668 is 866364082.

280463668 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63723 + ... + 67981.

It is an arithmetic number, because the mean of its divisors is an integer number (20784540).

Almost surely, 2^280463668 is an apocalyptic number.

It is an amenable number.

280463668 is a deficient number, since it is larger than the sum of its proper divisors (218365292).

280463668 is a wasteful number, since it uses less digits than its factorization.

280463668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4527 (or 4525 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 43.

The square root of 280463668 is about 16747.0495311861. The cubic root of 280463668 is about 654.5741792646.

The spelling of 280463668 in words is "two hundred eighty million, four hundred sixty-three thousand, six hundred sixty-eight".