7028856 has 40 divisors (see below), whose sum is σ = 19689120. Its totient is φ = 2342736.

The previous prime is 7028851. The next prime is 7028873. The reversal of 7028856 is 6588207.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 7028856.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7028851) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4776 + ... + 6071.

It is an arithmetic number, because the mean of its divisors is an integer number (492228).

Almost surely, 2^7028856 is an apocalyptic number.

It is an amenable number.

7028856 is an abundant number, since it is smaller than the sum of its proper divisors (12660264).

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

7028856 is a wasteful number, since it uses less digits than its factorization.

7028856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10865 (or 10852 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 7028856 is about 2651.1989740493. The cubic root of 7028856 is about 191.5556128773. Note that the first 3 decimals are identical.

The spelling of 7028856 in words is "seven million, twenty-eight thousand, eight hundred fifty-six".