280604864 has 14 divisors (see below), whose sum is σ = 556825404. Its totient is φ = 140302400.

The previous prime is 280604837. The next prime is 280604867. The reversal of 280604864 is 468406082.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (280604867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2192162 + ... + 2192289.

Almost surely, 2^280604864 is an apocalyptic number.

It is an amenable number.

280604864 is a deficient number, since it is larger than the sum of its proper divisors (276220540).

280604864 is an equidigital number, since it uses as much as digits as its factorization.

280604864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4384463 (or 4384453 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 38.

The square root of 280604864 is about 16751.2645492810. The cubic root of 280604864 is about 654.6840066218.

The spelling of 280604864 in words is "two hundred eighty million, six hundred four thousand, eight hundred sixty-four".