378865216 has 28 divisors (see below), whose sum is σ = 754252492. Its totient is φ = 188817408.

The previous prime is 378865189. The next prime is 378865259. The reversal of 378865216 is 612568873.

It can be written as a sum of positive squares in 2 ways, for example, as 171505216 + 207360000 = 13096^2 + 14400^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10576 + ... + 29488.

It is an arithmetic number, because the mean of its divisors is an integer number (26937589).

Almost surely, 2^378865216 is an apocalyptic number.

It is an amenable number.

378865216 is a deficient number, since it is larger than the sum of its proper divisors (375387276).

378865216 is a wasteful number, since it uses less digits than its factorization.

378865216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19238 (or 19228 counting only the distinct ones).

The product of its digits is 483840, while the sum is 46.

The square root of 378865216 is about 19464.4603315890. The cubic root of 378865216 is about 723.5939238658.

The spelling of 378865216 in words is "three hundred seventy-eight million, eight hundred sixty-five thousand, two hundred sixteen".