4004856 has 32 divisors (see below), whose sum is σ = 11125200. Its totient is φ = 1334880.

The previous prime is 4004851. The next prime is 4004867. The reversal of 4004856 is 6584004.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4004851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9055 + ... + 9486.

Almost surely, 2^4004856 is an apocalyptic number.

It is an amenable number.

4004856 is an abundant number, since it is smaller than the sum of its proper divisors (7120344).

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

4004856 is a wasteful number, since it uses less digits than its factorization.

4004856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18556 (or 18546 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 4004856 is about 2001.2136317745. The cubic root of 4004856 is about 158.8043160491.

Adding to 4004856 its product of nonzero digits (3840), we get a triangular number (4008696 = T₂₈₃₁).

It can be divided in two parts, 40048 and 56, that added together give a palindrome (40104).

The spelling of 4004856 in words is "four million, four thousand, eight hundred fifty-six".