320630028 has 24 divisors (see below), whose sum is σ = 780665088. Its totient is φ = 102229776.

The previous prime is 320630027. The next prime is 320630033. The reversal of 320630028 is 820036023.

It is a super-2 number, since 2×320630028² = 205607229710561568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (320630027) 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 7 ways as a sum of consecutive naturals, for example, 580576 + ... + 581127.

It is an arithmetic number, because the mean of its divisors is an integer number (32527712).

Almost surely, 2^320630028 is an apocalyptic number.

It is an amenable number.

320630028 is an abundant number, since it is smaller than the sum of its proper divisors (460035060).

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

320630028 is a wasteful number, since it uses less digits than its factorization.

320630028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1161733 (or 1161731 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 320630028 is about 17906.1449787496. The cubic root of 320630028 is about 684.4389730319.

The spelling of 320630028 in words is "three hundred twenty million, six hundred thirty thousand, twenty-eight".