6723428 has 12 divisors (see below), whose sum is σ = 11880960. Its totient is φ = 3328872.

The previous prime is 6723427. The next prime is 6723439. The reversal of 6723428 is 8243276.

It is a junction number, because it is equal to n+sod(n) for n = 6723394 and 6723403.

It is not an unprimeable number, because it can be changed into a prime (6723427) 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, 7748 + ... + 8571.

It is an arithmetic number, because the mean of its divisors is an integer number (990080).

Almost surely, 2^6723428 is an apocalyptic number.

It is an amenable number.

6723428 is a deficient number, since it is larger than the sum of its proper divisors (5157532).

6723428 is a wasteful number, since it uses less digits than its factorization.

6723428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16426 (or 16424 counting only the distinct ones).

The product of its digits is 16128, while the sum is 32.

The square root of 6723428 is about 2592.9573849178. The cubic root of 6723428 is about 188.7398415655.

The spelling of 6723428 in words is "six million, seven hundred twenty-three thousand, four hundred twenty-eight".