4028856 has 64 divisors (see below), whose sum is σ = 11172000. Its totient is φ = 1202688.

The previous prime is 4028851. The next prime is 4028863. The reversal of 4028856 is 6588204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4028851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11370 + ... + 11718.

Almost surely, 2^4028856 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 4028856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5586000).

4028856 is an abundant number, since it is smaller than the sum of its proper divisors (7143144).

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

4028856 is a wasteful number, since it uses less digits than its factorization.

4028856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408 (or 404 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 4028856 is about 2007.2010362692. The cubic root of 4028856 is about 159.1209079954.

It can be divided in two parts, 4028 and 856, that added together give a palindrome (4884).

The spelling of 4028856 in words is "four million, twenty-eight thousand, eight hundred fifty-six".