381481028 has 12 divisors (see below), whose sum is σ = 668017980. Its totient is φ = 190618752.

The previous prime is 381481027. The next prime is 381481057. The reversal of 381481028 is 820184183.

It can be written as a sum of positive squares in 2 ways, for example, as 310887424 + 70593604 = 17632^2 + 8402^2 .

It is not an unprimeable number, because it can be changed into a prime (381481027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23201 + ... + 36072.

It is an arithmetic number, because the mean of its divisors is an integer number (55668165).

Almost surely, 2^381481028 is an apocalyptic number.

It is an amenable number.

381481028 is a deficient number, since it is larger than the sum of its proper divisors (286536952).

381481028 is a wasteful number, since it uses less digits than its factorization.

381481028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60886 (or 60884 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 35.

The square root of 381481028 is about 19531.5393146572. The cubic root of 381481028 is about 725.2554172593.

The spelling of 381481028 in words is "three hundred eighty-one million, four hundred eighty-one thousand, twenty-eight".