381848428 has 24 divisors (see below), whose sum is σ = 736377488. Its totient is φ = 172138176.

The previous prime is 381848417. The next prime is 381848443. The reversal of 381848428 is 824848183.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83151 + ... + 87622.

Almost surely, 2^381848428 is an apocalyptic number.

It is an amenable number.

381848428 is a deficient number, since it is larger than the sum of its proper divisors (354529060).

381848428 is a wasteful number, since it uses less digits than its factorization.

381848428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170833 (or 170831 counting only the distinct ones).

The product of its digits is 393216, while the sum is 46.

The square root of 381848428 is about 19540.9423518929. The cubic root of 381848428 is about 725.4881709441.

The spelling of 381848428 in words is "three hundred eighty-one million, eight hundred forty-eight thousand, four hundred twenty-eight".