381541028 has 24 divisors (see below), whose sum is σ = 735213024. Its totient is φ = 171804800.

The previous prime is 381541019. The next prime is 381541049. The reversal of 381541028 is 820145183.

It is a junction number, because it is equal to n+sod(n) for n = 381540985 and 381541003.

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 7 ways as a sum of consecutive naturals, for example, 35813 + ... + 45228.

It is an arithmetic number, because the mean of its divisors is an integer number (30633876).

Almost surely, 2^381541028 is an apocalyptic number.

It is an amenable number.

381541028 is a deficient number, since it is larger than the sum of its proper divisors (353671996).

381541028 is a wasteful number, since it uses less digits than its factorization.

381541028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81163 (or 81161 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 381541028 is about 19533.0752315144. The cubic root of 381541028 is about 725.2934384108.

The spelling of 381541028 in words is "three hundred eighty-one million, five hundred forty-one thousand, twenty-eight".