6808428 has 72 divisors (see below), whose sum is σ = 19439280. Its totient is φ = 2059200.

The previous prime is 6808427. The next prime is 6808429. The reversal of 6808428 is 8248086.

It is an interprime number because it is at equal distance from previous prime (6808427) and next prime (6808429).

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

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 6808392 and 6808401.

It is not an unprimeable number, because it can be changed into a prime (6808421) 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, 12808 + ... + 13328.

It is an arithmetic number, because the mean of its divisors is an integer number (269990).

Almost surely, 2^6808428 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 6808428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9719640).

6808428 is an abundant number, since it is smaller than the sum of its proper divisors (12630852).

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

6808428 is a wasteful number, since it uses less digits than its factorization.

6808428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556 (or 537 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 6808428 is about 2609.2964569017. The cubic root of 6808428 is about 189.5318854829.

The spelling of 6808428 in words is "six million, eight hundred eight thousand, four hundred twenty-eight".