320066000 has 40 divisors (see below), whose sum is σ = 773924424. Its totient is φ = 128025600.

The previous prime is 320065981. The next prime is 320066017. The reversal of 320066000 is 660023.

It can be written as a sum of positive squares in 4 ways, for example, as 88661056 + 231404944 = 9416^2 + 15212^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 320066000.

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, 78017 + ... + 82016.

Almost surely, 2^320066000 is an apocalyptic number.

It is an amenable number.

320066000 is an abundant number, since it is smaller than the sum of its proper divisors (453858424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320066000 is a wasteful number, since it uses less digits than its factorization.

320066000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160056 (or 160040 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 320066000 is about 17890.3884809693. The cubic root of 320066000 is about 684.0373997767.

The spelling of 320066000 in words is "three hundred twenty million, sixty-six thousand".