386831808 has 224 divisors, whose sum is σ = 1269918720. Its totient is φ = 114462720.

The previous prime is 386831807. The next prime is 386831813. The reversal of 386831808 is 808138683.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (386831807) 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 31 ways as a sum of consecutive naturals, for example, 893160 + ... + 893592.

It is an arithmetic number, because the mean of its divisors is an integer number (5669280).

Almost surely, 2^386831808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 386831808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (634959360).

386831808 is an abundant number, since it is smaller than the sum of its proper divisors (883086912).

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

386831808 is a wasteful number, since it uses less digits than its factorization.

386831808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512 (or 496 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 386831808 is about 19668.0402684152. The cubic root of 386831808 is about 728.6305771060.

The spelling of 386831808 in words is "three hundred eighty-six million, eight hundred thirty-one thousand, eight hundred eight".