381934828 has 12 divisors (see below), whose sum is σ = 729148392. Its totient is φ = 173606720.

The previous prime is 381934793. The next prime is 381934859. The reversal of 381934828 is 828439183.

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 3 ways as a sum of consecutive naturals, for example, 4340125 + ... + 4340212.

It is an arithmetic number, because the mean of its divisors is an integer number (60762366).

Almost surely, 2^381934828 is an apocalyptic number.

It is an amenable number.

381934828 is a deficient number, since it is larger than the sum of its proper divisors (347213564).

381934828 is a wasteful number, since it uses less digits than its factorization.

381934828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8680352 (or 8680350 counting only the distinct ones).

The product of its digits is 331776, while the sum is 46.

The square root of 381934828 is about 19543.1529697744. The cubic root of 381934828 is about 725.5428850194.

The spelling of 381934828 in words is "three hundred eighty-one million, nine hundred thirty-four thousand, eight hundred twenty-eight".