3867856 has 20 divisors (see below), whose sum is σ = 7569952. Its totient is φ = 1914336.

The previous prime is 3867847. The next prime is 3867859. The reversal of 3867856 is 6587683.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3867859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 475 + ... + 2821.

Almost surely, 2^3867856 is an apocalyptic number.

It is an amenable number.

3867856 is a deficient number, since it is larger than the sum of its proper divisors (3702096).

3867856 is a wasteful number, since it uses less digits than its factorization.

3867856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2458 (or 2452 counting only the distinct ones).

The product of its digits is 241920, while the sum is 43.

The square root of 3867856 is about 1966.6865535718. The cubic root of 3867856 is about 156.9724484089.

The spelling of 3867856 in words is "three million, eight hundred sixty-seven thousand, eight hundred fifty-six".