3850355520 has 672 divisors, whose sum is σ = 15566745600. Its totient is φ = 894136320.

The previous prime is 3850355497. The next prime is 3850355569. The reversal of 3850355520 is 255530583.

3850355520 is a `hidden beast` number, since 3 + 85 + 0 + 3 + 55 + 520 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 30317697 + ... + 30317823.

It is an arithmetic number, because the mean of its divisors is an integer number (23164800).

Almost surely, 2^3850355520 is an apocalyptic number.

3850355520 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3850355520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7783372800).

3850355520 is an abundant number, since it is smaller than the sum of its proper divisors (11716390080).

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

3850355520 is a wasteful number, since it uses less digits than its factorization.

3850355520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

The square root of 3850355520 is about 62051.2330256217. The cubic root of 3850355520 is about 1567.3534489027.

The spelling of 3850355520 in words is "three billion, eight hundred fifty million, three hundred fifty-five thousand, five hundred twenty".