320563028 has 6 divisors (see below), whose sum is σ = 560985306. Its totient is φ = 160281512.

The previous prime is 320563007. The next prime is 320563049. The reversal of 320563028 is 820365023.

320563028 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (320563007) and next prime (320563049).

It can be written as a sum of positive squares in only one way, i.e., 318336964 + 2226064 = 17842^2 + 1492^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40070375 + ... + 40070382.

It is an arithmetic number, because the mean of its divisors is an integer number (93497551).

Almost surely, 2^320563028 is an apocalyptic number.

It is an amenable number.

320563028 is a deficient number, since it is larger than the sum of its proper divisors (240422278).

320563028 is a wasteful number, since it uses less digits than its factorization.

320563028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80140761 (or 80140759 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 320563028 is about 17904.2740148826. The cubic root of 320563028 is about 684.3912954371.

The spelling of 320563028 in words is "three hundred twenty million, five hundred sixty-three thousand, twenty-eight".