320628886 has 8 divisors (see below), whose sum is σ = 481649544. Its totient is φ = 160079040.

The previous prime is 320628883. The next prime is 320628907. The reversal of 320628886 is 688826023.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320628883) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 115995 + ... + 118726.

It is an arithmetic number, because the mean of its divisors is an integer number (60206193).

Almost surely, 2^320628886 is an apocalyptic number.

320628886 is a deficient number, since it is larger than the sum of its proper divisors (161020658).

320628886 is a wasteful number, since it uses less digits than its factorization.

320628886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235406.

The product of its (nonzero) digits is 221184, while the sum is 43.

The square root of 320628886 is about 17906.1130902270. The cubic root of 320628886 is about 684.4381604337.

The spelling of 320628886 in words is "three hundred twenty million, six hundred twenty-eight thousand, eight hundred eighty-six".