385940220 has 48 divisors (see below), whose sum is σ = 1081509408. Its totient is φ = 102833920.

The previous prime is 385940213. The next prime is 385940237. The reversal of 385940220 is 22049583.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118210 + ... + 121430.

It is an arithmetic number, because the mean of its divisors is an integer number (22531446).

Almost surely, 2^385940220 is an apocalyptic number.

385940220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

385940220 is an abundant number, since it is smaller than the sum of its proper divisors (695569188).

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

385940220 is a wasteful number, since it uses less digits than its factorization.

385940220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5230 (or 5228 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 385940220 is about 19645.3612845374. The cubic root of 385940220 is about 728.0703525578.

The spelling of 385940220 in words is "three hundred eighty-five million, nine hundred forty thousand, two hundred twenty".