378776384 has 56 divisors (see below), whose sum is σ = 877336320. Its totient is φ = 158870016.

The previous prime is 378776353. The next prime is 378776399. The reversal of 378776384 is 483677873.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×378776384² = 286943098152230912, which contains 22 as substring.

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, 12062 + ... + 30050.

It is an arithmetic number, because the mean of its divisors is an integer number (15666720).

Almost surely, 2^378776384 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 378776384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (438668160).

378776384 is an abundant number, since it is smaller than the sum of its proper divisors (498559936).

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

378776384 is a wasteful number, since it uses less digits than its factorization.

378776384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18055 (or 18045 counting only the distinct ones).

The product of its digits is 4741632, while the sum is 53.

The square root of 378776384 is about 19462.1782953502. The cubic root of 378776384 is about 723.5373660918.

The spelling of 378776384 in words is "three hundred seventy-eight million, seven hundred seventy-six thousand, three hundred eighty-four".