6428423 has 4 divisors (see below), whose sum is σ = 6549768. Its totient is φ = 6307080.

The previous prime is 6428419. The next prime is 6428447. The reversal of 6428423 is 3248246.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6428423 - 2² = 6428419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6428473) 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, 60593 + ... + 60698.

It is an arithmetic number, because the mean of its divisors is an integer number (1637442).

Almost surely, 2^6428423 is an apocalyptic number.

6428423 is a deficient number, since it is larger than the sum of its proper divisors (121345).

6428423 is a wasteful number, since it uses less digits than its factorization.

6428423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121344.

The product of its digits is 9216, while the sum is 29.

The square root of 6428423 is about 2535.4334935076. The cubic root of 6428423 is about 185.9379972164.

The spelling of 6428423 in words is "six million, four hundred twenty-eight thousand, four hundred twenty-three".