3878105 has 24 divisors (see below), whose sum is σ = 5909760. Its totient is φ = 2415840.

The previous prime is 3878101. The next prime is 3878107. The reversal of 3878105 is 5018783.

It is not a de Polignac number, because 3878105 - 2² = 3878101 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (3878101) 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 23 ways as a sum of consecutive naturals, for example, 1976 + ... + 3414.

It is an arithmetic number, because the mean of its divisors is an integer number (246240).

Almost surely, 2^3878105 is an apocalyptic number.

3878105 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3878105 is a deficient number, since it is larger than the sum of its proper divisors (2031655).

3878105 is a wasteful number, since it uses less digits than its factorization.

3878105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1469 (or 1462 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 3878105 is about 1969.2904813663. The cubic root of 3878105 is about 157.1109740511.

The spelling of 3878105 in words is "three million, eight hundred seventy-eight thousand, one hundred five".