6405028 has 12 divisors (see below), whose sum is σ = 12810112. Its totient is φ = 2745000.

The previous prime is 6405023. The next prime is 6405029. The reversal of 6405028 is 8205046.

6405028 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 6404993 and 6405011.

It is not an unprimeable number, because it can be changed into a prime (6405023) 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, 114348 + ... + 114403.

Almost surely, 2^6405028 is an apocalyptic number.

It is an amenable number.

6405028 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6405028 is a wasteful number, since it uses less digits than its factorization.

6405028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228762 (or 228760 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 6405028 is about 2530.8156787882. The cubic root of 6405028 is about 185.7121612606.

The spelling of 6405028 in words is "six million, four hundred five thousand, twenty-eight".