381528304 has 20 divisors (see below), whose sum is σ = 739924864. Its totient is φ = 190579968.

The previous prime is 381528289. The next prime is 381528313. The reversal of 381528304 is 403825183.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 381528304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6424 + ... + 28360.

Almost surely, 2^381528304 is an apocalyptic number.

It is an amenable number.

381528304 is a deficient number, since it is larger than the sum of its proper divisors (358396560).

381528304 is a wasteful number, since it uses less digits than its factorization.

381528304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23032 (or 23026 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 381528304 is about 19532.7495248365. The cubic root of 381528304 is about 725.2853757249.

The spelling of 381528304 in words is "three hundred eighty-one million, five hundred twenty-eight thousand, three hundred four".