385509056 has 28 divisors (see below), whose sum is σ = 789675840. Its totient is φ = 186535680.

The previous prime is 385509043. The next prime is 385509077. The reversal of 385509056 is 650905583.

It is a super-2 number, since 2×385509056² = 297234464516022272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95171 + ... + 99138.

Almost surely, 2^385509056 is an apocalyptic number.

It is an amenable number.

385509056 is an abundant number, since it is smaller than the sum of its proper divisors (404166784).

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

385509056 is a wasteful number, since it uses less digits than its factorization.

385509056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194352 (or 194342 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 41.

The square root of 385509056 is about 19634.3845332620. The cubic root of 385509056 is about 727.7991234205.

The spelling of 385509056 in words is "three hundred eighty-five million, five hundred nine thousand, fifty-six".