378309312 has 224 divisors, whose sum is σ = 1172911040. Its totient is φ = 119439360.

The previous prime is 378309293. The next prime is 378309343. The reversal of 378309312 is 213903873.

It is a happy number.

378309312 is a `hidden beast` number, since 37 + 8 + 309 + 312 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3900048 + ... + 3900144.

It is an arithmetic number, because the mean of its divisors is an integer number (5236210).

Almost surely, 2^378309312 is an apocalyptic number.

378309312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 378309312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (586455520).

378309312 is an abundant number, since it is smaller than the sum of its proper divisors (794601728).

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

378309312 is a wasteful number, since it uses less digits than its factorization.

378309312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216 (or 200 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 378309312 is about 19450.1751148929. The cubic root of 378309312 is about 723.2398439817.

The spelling of 378309312 in words is "three hundred seventy-eight million, three hundred nine thousand, three hundred twelve".