381508 has 12 divisors (see below), whose sum is σ = 673792. Its totient is φ = 189000.

The previous prime is 381487. The next prime is 381509. The reversal of 381508 is 805183.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (381509) 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, 133 + ... + 883.

2³⁸¹⁵⁰⁸ is an apocalyptic number.

It is an amenable number.

381508 is a deficient number, since it is larger than the sum of its proper divisors (292284).

381508 is a wasteful number, since it uses less digits than its factorization.

381508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 882 (or 880 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 381508 is about 617.6633387210. The cubic root of 381508 is about 72.5272509527.

The spelling of 381508 in words is "three hundred eighty-one thousand, five hundred eight".