6428394 has 48 divisors (see below), whose sum is σ = 16066752. Its totient is φ = 1819584.

The previous prime is 6428393. The next prime is 6428399. The reversal of 6428394 is 4938246.

It is a happy number.

6428394 is a `hidden beast` number, since 642 + 8 + 3 + 9 + 4 = 666.

It is not an unprimeable number, because it can be changed into a prime (6428393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20382 + ... + 20694.

It is an arithmetic number, because the mean of its divisors is an integer number (334724).

Almost surely, 2^6428394 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6428394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8033376).

6428394 is an abundant number, since it is smaller than the sum of its proper divisors (9638358).

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

6428394 is a wasteful number, since it uses less digits than its factorization.

6428394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491 (or 488 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 6428394 is about 2535.4277745580. The cubic root of 6428394 is about 185.9377176138.

The spelling of 6428394 in words is "six million, four hundred twenty-eight thousand, three hundred ninety-four".