4047856 has 20 divisors (see below), whose sum is σ = 8096704. Its totient is φ = 1958400.

The previous prime is 4047847. The next prime is 4047929. The reversal of 4047856 is 6587404.

4047856 is an admirable number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3585 + ... + 4576.

Almost surely, 2^4047856 is an apocalyptic number.

It is an amenable number.

4047856 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

4047856 is a wasteful number, since it uses less digits than its factorization.

4047856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8200 (or 8194 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 4047856 is about 2011.9284281505. The cubic root of 4047856 is about 159.3706527585.

The spelling of 4047856 in words is "four million, forty-seven thousand, eight hundred fifty-six".