6866028 has 72 divisors (see below), whose sum is σ = 19813248. Its totient is φ = 1986048.

The previous prime is 6866021. The next prime is 6866039. The reversal of 6866028 is 8206686.

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

It is a junction number, because it is equal to n+sod(n) for n = 6865983 and 6866001.

It is not an unprimeable number, because it can be changed into a prime (6866021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7525 + ... + 8387.

It is an arithmetic number, because the mean of its divisors is an integer number (275184).

Almost surely, 2^6866028 is an apocalyptic number.

6866028 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6866028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9906624).

6866028 is an abundant number, since it is smaller than the sum of its proper divisors (12947220).

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

6866028 is a wasteful number, since it uses less digits than its factorization.

6866028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903 (or 898 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 6866028 is about 2620.3106686040. The cubic root of 6866028 is about 190.0648716618.

The spelling of 6866028 in words is "six million, eight hundred sixty-six thousand, twenty-eight".