390000220 has 24 divisors (see below), whose sum is σ = 821647008. Its totient is φ = 155496000.

The previous prime is 390000217. The next prime is 390000269. The reversal of 390000220 is 22000093.

It is a junction number, because it is equal to n+sod(n) for n = 390000194 and 390000203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25131 + ... + 37570.

It is an arithmetic number, because the mean of its divisors is an integer number (34235292).

Almost surely, 2^390000220 is an apocalyptic number.

It is an amenable number.

390000220 is an abundant number, since it is smaller than the sum of its proper divisors (431646788).

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

390000220 is a wasteful number, since it uses less digits than its factorization.

390000220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63021 (or 63019 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 390000220 is about 19748.4232281972. The cubic root of 390000220 is about 730.6144947867.

The spelling of 390000220 in words is "three hundred ninety million, two hundred twenty", and thus it is an aban number.