6928405 has 16 divisors (see below), whose sum is σ = 9465984. Its totient is φ = 4818880.

The previous prime is 6928349. The next prime is 6928409. The reversal of 6928405 is 5048296.

It is a happy number.

It is not a de Polignac number, because 6928405 - 2¹¹ = 6926357 is a prime.

6928405 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6928409) 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 15 ways as a sum of consecutive naturals, for example, 1474 + ... + 4003.

It is an arithmetic number, because the mean of its divisors is an integer number (591624).

Almost surely, 2^6928405 is an apocalyptic number.

It is an amenable number.

6928405 is a deficient number, since it is larger than the sum of its proper divisors (2537579).

6928405 is a wasteful number, since it uses less digits than its factorization.

6928405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5516.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 6928405 is about 2632.1863535852. The cubic root of 6928405 is about 190.6387092174.

The spelling of 6928405 in words is "six million, nine hundred twenty-eight thousand, four hundred five".