3878212 has 18 divisors (see below), whose sum is σ = 7350378. Its totient is φ = 1789632.

The previous prime is 3878209. The next prime is 3878219. The reversal of 3878212 is 2128783.

3878212 is digitally balanced in base 2 and base 5, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 440896 + 3437316 = 664^2 + 1854^2 .

It is not an unprimeable number, because it can be changed into a prime (3878219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2193 + ... + 3544.

Almost surely, 2^3878212 is an apocalyptic number.

It is an amenable number.

3878212 is a deficient number, since it is larger than the sum of its proper divisors (3472166).

3878212 is a wasteful number, since it uses less digits than its factorization.

3878212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5767 (or 5752 counting only the distinct ones).

The product of its digits is 5376, while the sum is 31.

The square root of 3878212 is about 1969.3176483239. The cubic root of 3878212 is about 157.1124189767.

The spelling of 3878212 in words is "three million, eight hundred seventy-eight thousand, two hundred twelve".