3857856 has 56 divisors (see below), whose sum is σ = 10387584. Its totient is φ = 1263360.

The previous prime is 3857839. The next prime is 3857863. The reversal of 3857856 is 6587583.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13491 + ... + 13773.

Almost surely, 2^3857856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3857856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5193792).

3857856 is an abundant number, since it is smaller than the sum of its proper divisors (6529728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3857856 is a wasteful number, since it uses less digits than its factorization.

3857856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369 (or 359 counting only the distinct ones).

The product of its digits is 201600, while the sum is 42.

The square root of 3857856 is about 1964.1425610174. The cubic root of 3857856 is about 156.8370521906.

The spelling of 3857856 in words is "three million, eight hundred fifty-seven thousand, eight hundred fifty-six".