381856760 has 64 divisors (see below), whose sum is σ = 895968000. Its totient is φ = 146304000.

The previous prime is 381856751. The next prime is 381856777. The reversal of 381856760 is 67658183.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123716 + ... + 126764.

It is an arithmetic number, because the mean of its divisors is an integer number (13999500).

Almost surely, 2^381856760 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 381856760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (447984000).

381856760 is an abundant number, since it is smaller than the sum of its proper divisors (514111240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

381856760 is a wasteful number, since it uses less digits than its factorization.

381856760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3192 (or 3188 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 381856760 is about 19541.1555441330. The cubic root of 381856760 is about 725.4934476657.

The spelling of 381856760 in words is "three hundred eighty-one million, eight hundred fifty-six thousand, seven hundred sixty".