6404928 has 28 divisors (see below), whose sum is σ = 16946880. Its totient is φ = 2134912.

The previous prime is 6404927. The next prime is 6404929. The reversal of 6404928 is 8294046.

It is an interprime number because it is at equal distance from previous prime (6404927) and next prime (6404929).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6404921) 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, 16488 + ... + 16871.

Almost surely, 2^6404928 is an apocalyptic number.

It is an amenable number.

6404928 is an abundant number, since it is smaller than the sum of its proper divisors (10541952).

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

6404928 is a wasteful number, since it uses less digits than its factorization.

6404928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33374 (or 33364 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 6404928 is about 2530.7959222347. The cubic root of 6404928 is about 185.7111947640.

The spelling of 6404928 in words is "six million, four hundred four thousand, nine hundred twenty-eight".