3878446 has 32 divisors (see below), whose sum is σ = 6967296. Its totient is φ = 1596000.

The previous prime is 3878423. The next prime is 3878447. The reversal of 3878446 is 6448783.

Its product of digits (129024) is a multiple of the sum of its prime divisors (288).

It is a junction number, because it is equal to n+sod(n) for n = 3878399 and 3878408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3878447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20211 + ... + 20401.

It is an arithmetic number, because the mean of its divisors is an integer number (217728).

Almost surely, 2^3878446 is an apocalyptic number.

3878446 is a deficient number, since it is larger than the sum of its proper divisors (3088850).

3878446 is a wasteful number, since it uses less digits than its factorization.

3878446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288.

The product of its digits is 129024, while the sum is 40.

The square root of 3878446 is about 1969.3770588691. The cubic root of 3878446 is about 157.1155788148.

The spelling of 3878446 in words is "three million, eight hundred seventy-eight thousand, four hundred forty-six".