320506028 has 24 divisors (see below), whose sum is σ = 583616880. Its totient is φ = 153823040.

The previous prime is 320506001. The next prime is 320506033. The reversal of 320506028 is 820605023.

It is a super-2 number, since 2×320506028² = 205448227968673568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 320505988 and 320506006.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12083 + ... + 28053.

It is an arithmetic number, because the mean of its divisors is an integer number (24317370).

Almost surely, 2^320506028 is an apocalyptic number.

It is an amenable number.

320506028 is a deficient number, since it is larger than the sum of its proper divisors (263110852).

320506028 is a wasteful number, since it uses less digits than its factorization.

320506028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16177 (or 16175 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 320506028 is about 17902.6821454217. The cubic root of 320506028 is about 684.3507286709.

The spelling of 320506028 in words is "three hundred twenty million, five hundred six thousand, twenty-eight".