390710020 has 12 divisors (see below), whose sum is σ = 820491084. Its totient is φ = 156284000.

The previous prime is 390710017. The next prime is 390710029. The reversal of 390710020 is 20017093.

It can be written as a sum of positive squares in 2 ways, for example, as 126517504 + 264192516 = 11248^2 + 16254^2 .

It is a junction number, because it is equal to n+sod(n) for n = 390709973 and 390710000.

It is not an unprimeable number, because it can be changed into a prime (390710029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9767731 + ... + 9767770.

It is an arithmetic number, because the mean of its divisors is an integer number (68374257).

Almost surely, 2^390710020 is an apocalyptic number.

It is an amenable number.

390710020 is an abundant number, since it is smaller than the sum of its proper divisors (429781064).

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

390710020 is a wasteful number, since it uses less digits than its factorization.

390710020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19535510 (or 19535508 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 390710020 is about 19766.3861138044. The cubic root of 390710020 is about 731.0574653701.

The spelling of 390710020 in words is "three hundred ninety million, seven hundred ten thousand, twenty".