386215220 has 24 divisors (see below), whose sum is σ = 815136000. Its totient is φ = 153708192.

The previous prime is 386215211. The next prime is 386215229. The reversal of 386215220 is 22512683.

It is an interprime number because it is at equal distance from previous prime (386215211) and next prime (386215229).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (386215229) 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, 44540 + ... + 52499.

It is an arithmetic number, because the mean of its divisors is an integer number (33964000).

Almost surely, 2^386215220 is an apocalyptic number.

It is an amenable number.

386215220 is an abundant number, since it is smaller than the sum of its proper divisors (428920780).

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

386215220 is a wasteful number, since it uses less digits than its factorization.

386215220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97247 (or 97245 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 386215220 is about 19652.3591459143. The cubic root of 386215220 is about 728.2432392729.

The spelling of 386215220 in words is "three hundred eighty-six million, two hundred fifteen thousand, two hundred twenty".