3878930 has 32 divisors (see below), whose sum is σ = 7698240. Its totient is φ = 1395520.

The previous prime is 3878923. The next prime is 3878947. The reversal of 3878930 is 398783.

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 15 ways as a sum of consecutive naturals, for example, 19592 + ... + 19788.

It is an arithmetic number, because the mean of its divisors is an integer number (240570).

Almost surely, 2^3878930 is an apocalyptic number.

It is a pronic number, being equal to 1969×1970.

3878930 is a deficient number, since it is larger than the sum of its proper divisors (3819310).

3878930 is a wasteful number, since it uses less digits than its factorization.

3878930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 3878930 is about 1969.4999365321. The cubic root of 3878930 is about 157.1221141451.

The spelling of 3878930 in words is "three million, eight hundred seventy-eight thousand, nine hundred thirty".