381499828 has 12 divisors (see below), whose sum is σ = 667935072. Its totient is φ = 190661240.

The previous prime is 381499823. The next prime is 381499829. The reversal of 381499828 is 828994183.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381499823) by changing a digit.

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, 11968 + ... + 30103.

It is an arithmetic number, because the mean of its divisors is an integer number (55661256).

Almost surely, 2^381499828 is an apocalyptic number.

It is an amenable number.

381499828 is a deficient number, since it is larger than the sum of its proper divisors (286435244).

381499828 is a wasteful number, since it uses less digits than its factorization.

381499828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44342 (or 44340 counting only the distinct ones).

The product of its digits is 995328, while the sum is 52.

The square root of 381499828 is about 19532.0205815988. The cubic root of 381499828 is about 725.2673309823.

The spelling of 381499828 in words is "three hundred eighty-one million, four hundred ninety-nine thousand, eight hundred twenty-eight".