6904240 has 40 divisors (see below), whose sum is σ = 18347040. Its totient is φ = 2366976.

The previous prime is 6904231. The next prime is 6904241. The reversal of 6904240 is 424096.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (6904241) 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 7 ways as a sum of consecutive naturals, for example, 5605 + ... + 6724.

It is an arithmetic number, because the mean of its divisors is an integer number (458676).

Almost surely, 2^6904240 is an apocalyptic number.

It is an amenable number.

6904240 is an abundant number, since it is smaller than the sum of its proper divisors (11442800).

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

6904240 is a wasteful number, since it uses less digits than its factorization.

6904240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12349 (or 12343 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 6904240 is about 2627.5920535730. The cubic root of 6904240 is about 190.4168134765.

The spelling of 6904240 in words is "six million, nine hundred four thousand, two hundred forty".