6740428 has 6 divisors (see below), whose sum is σ = 11795756. Its totient is φ = 3370212.

The previous prime is 6740407. The next prime is 6740429. The reversal of 6740428 is 8240476.

It is a self number, because there is not a number n which added to its sum of digits gives 6740428.

It is not an unprimeable number, because it can be changed into a prime (6740429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 842550 + ... + 842557.

Almost surely, 2^6740428 is an apocalyptic number.

It is an amenable number.

6740428 is a deficient number, since it is larger than the sum of its proper divisors (5055328).

6740428 is a wasteful number, since it uses less digits than its factorization.

6740428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1685111 (or 1685109 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 6740428 is about 2596.2334255610. The cubic root of 6740428 is about 188.8987821552.

The spelling of 6740428 in words is "six million, seven hundred forty thousand, four hundred twenty-eight".