6928840 has 32 divisors (see below), whose sum is σ = 15785280. Its totient is φ = 2736832.

The previous prime is 6928829. The next prime is 6928847. The reversal of 6928840 is 488296.

It is a self number, because there is not a number n which added to its sum of digits gives 6928840.

It is not an unprimeable number, because it can be changed into a prime (6928847) 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, 2277 + ... + 4363.

It is an arithmetic number, because the mean of its divisors is an integer number (493290).

Almost surely, 2^6928840 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 6928840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7892640).

6928840 is an abundant number, since it is smaller than the sum of its proper divisors (8856440).

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

6928840 is a wasteful number, since it uses less digits than its factorization.

6928840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2181 (or 2177 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 6928840 is about 2632.2689832158. The cubic root of 6928840 is about 190.6426988852.

The spelling of 6928840 in words is "six million, nine hundred twenty-eight thousand, eight hundred forty".