381827380 has 24 divisors (see below), whose sum is σ = 874732320. Its totient is φ = 138846240.

The previous prime is 381827377. The next prime is 381827417. The reversal of 381827380 is 83728183.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 867570 + ... + 868009.

It is an arithmetic number, because the mean of its divisors is an integer number (36447180).

Almost surely, 2^381827380 is an apocalyptic number.

It is an amenable number.

381827380 is an abundant number, since it is smaller than the sum of its proper divisors (492904940).

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

381827380 is a wasteful number, since it uses less digits than its factorization.

381827380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1735599 (or 1735597 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 381827380 is about 19540.4037829314. The cubic root of 381827380 is about 725.4748407373.

The spelling of 381827380 in words is "three hundred eighty-one million, eight hundred twenty-seven thousand, three hundred eighty".