6831428 has 12 divisors (see below), whose sum is σ = 12018300. Its totient is φ = 3397632.

The previous prime is 6831427. The next prime is 6831449. The reversal of 6831428 is 8241386.

It can be written as a sum of positive squares in 2 ways, for example, as 521284 + 6310144 = 722^2 + 2512^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6831394 and 6831403.

It is not an unprimeable number, because it can be changed into a prime (6831427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3653 + ... + 5196.

It is an arithmetic number, because the mean of its divisors is an integer number (1001525).

Almost surely, 2^6831428 is an apocalyptic number.

It is an amenable number.

6831428 is a deficient number, since it is larger than the sum of its proper divisors (5186872).

6831428 is a wasteful number, since it uses less digits than its factorization.

6831428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9046 (or 9044 counting only the distinct ones).

The product of its digits is 9216, while the sum is 32.

The square root of 6831428 is about 2613.7000593029. The cubic root of 6831428 is about 189.7450689970.

The spelling of 6831428 in words is "six million, eight hundred thirty-one thousand, four hundred twenty-eight".