378331812 has 72 divisors (see below), whose sum is σ = 991710720. Its totient is φ = 121484160.

The previous prime is 378331801. The next prime is 378331813. The reversal of 378331812 is 218133873.

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

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (378331813) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 292864 + ... + 294152.

It is an arithmetic number, because the mean of its divisors is an integer number (13773760).

Almost surely, 2^378331812 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 378331812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (495855360).

378331812 is an abundant number, since it is smaller than the sum of its proper divisors (613378908).

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

378331812 is a wasteful number, since it uses less digits than its factorization.

378331812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1593 (or 1588 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 378331812 is about 19450.7535072552. The cubic root of 378331812 is about 723.2541819616.

The spelling of 378331812 in words is "three hundred seventy-eight million, three hundred thirty-one thousand, eight hundred twelve".