3878378 has 16 divisors (see below), whose sum is σ = 6699840. Its totient is φ = 1649376.

The previous prime is 3878359. The next prime is 3878389. The reversal of 3878378 is 8738783.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a Curzon 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, 950 + ... + 2942.

It is an arithmetic number, because the mean of its divisors is an integer number (418740).

Almost surely, 2^3878378 is an apocalyptic number.

3878378 is a deficient number, since it is larger than the sum of its proper divisors (2821462).

3878378 is a wasteful number, since it uses less digits than its factorization.

3878378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2141.

The product of its digits is 225792, while the sum is 44.

The square root of 3878378 is about 1969.3597944510. The cubic root of 3878378 is about 157.1146605844.

The spelling of 3878378 in words is "three million, eight hundred seventy-eight thousand, three hundred seventy-eight".