320020030 has 64 divisors (see below), whose sum is σ = 656475840. Its totient is φ = 111283200.

The previous prime is 320020027. The next prime is 320020069. The reversal of 320020030 is 30020023.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 320019989 and 320020016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 247626 + ... + 248914.

It is an arithmetic number, because the mean of its divisors is an integer number (10257435).

Almost surely, 2^320020030 is an apocalyptic number.

320020030 is an abundant number, since it is smaller than the sum of its proper divisors (336455810).

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

320020030 is a wasteful number, since it uses less digits than its factorization.

320020030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1405.

The product of its (nonzero) digits is 36, while the sum is 10.

The square root of 320020030 is about 17889.1036667576. The cubic root of 320020030 is about 684.0046495472.

Adding to 320020030 its reverse (30020023), we get a palindrome (350040053).

The spelling of 320020030 in words is "three hundred twenty million, twenty thousand, thirty".