378878816 has 48 divisors (see below), whose sum is σ = 799442784. Its totient is φ = 176292864.

The previous prime is 378878809. The next prime is 378878849. The reversal of 378878816 is 618878873.

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, 20276 + ... + 34188.

It is an arithmetic number, because the mean of its divisors is an integer number (16655058).

Almost surely, 2^378878816 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 378878816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (399721392).

378878816 is an abundant number, since it is smaller than the sum of its proper divisors (420563968).

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

378878816 is a wasteful number, since it uses less digits than its factorization.

378878816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13983 (or 13975 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 56.

The square root of 378878816 is about 19464.8096831179. The cubic root of 378878816 is about 723.6025819666.

The spelling of 378878816 in words is "three hundred seventy-eight million, eight hundred seventy-eight thousand, eight hundred sixteen".