381735828 has 30 divisors (see below), whose sum is σ = 997933706. Its totient is φ = 127245168.

The previous prime is 381735817. The next prime is 381735869. The reversal of 381735828 is 828537183.

It can be written as a sum of positive squares in only one way, i.e., 194100624 + 187635204 = 13932^2 + 13698^2 .

It is a congruent number.

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 588775 + ... + 589422.

Almost surely, 2^381735828 is an apocalyptic number.

It is an amenable number.

381735828 is an abundant number, since it is smaller than the sum of its proper divisors (616197878).

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

381735828 is a wasteful number, since it uses less digits than its factorization.

381735828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1178213 (or 1178202 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 381735828 is about 19538.0610092199. The cubic root of 381735828 is about 725.4168529438.

The spelling of 381735828 in words is "three hundred eighty-one million, seven hundred thirty-five thousand, eight hundred twenty-eight".