381215984 has 40 divisors (see below), whose sum is σ = 788675712. Its totient is φ = 178073280.

The previous prime is 381215963. The next prime is 381215993. The reversal of 381215984 is 489512183.

It is a congruent 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, 3779 + ... + 27869.

Almost surely, 2^381215984 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 381215984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (394337856).

381215984 is an abundant number, since it is smaller than the sum of its proper divisors (407459728).

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

381215984 is a wasteful number, since it uses less digits than its factorization.

381215984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24165 (or 24159 counting only the distinct ones).

The product of its digits is 69120, while the sum is 41.

The square root of 381215984 is about 19524.7531098347. The cubic root of 381215984 is about 725.0874149057.

The spelling of 381215984 in words is "three hundred eighty-one million, two hundred fifteen thousand, nine hundred eighty-four".