6505428 has 12 divisors (see below), whose sum is σ = 15179360. Its totient is φ = 2168472.

The previous prime is 6505409. The next prime is 6505453. The reversal of 6505428 is 8245056.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 6505395 and 6505404.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 271048 + ... + 271071.

Almost surely, 2^6505428 is an apocalyptic number.

It is an amenable number.

6505428 is an abundant number, since it is smaller than the sum of its proper divisors (8673932).

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

6505428 is a wasteful number, since it uses less digits than its factorization.

6505428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542126 (or 542124 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 6505428 is about 2550.5740530320. The cubic root of 6505428 is about 186.6774922860.

The spelling of 6505428 in words is "six million, five hundred five thousand, four hundred twenty-eight".