6428019 has 8 divisors (see below), whose sum is σ = 9230032. Its totient is φ = 3955680.

The previous prime is 6428011. The next prime is 6428029. The reversal of 6428019 is 9108246.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6428019 - 2³ = 6428011 is a prime.

It is a super-2 number, since 2×6428019² = 82638856528722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6428011) 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, 82372 + ... + 82449.

It is an arithmetic number, because the mean of its divisors is an integer number (1153754).

Almost surely, 2^6428019 is an apocalyptic number.

6428019 is a deficient number, since it is larger than the sum of its proper divisors (2802013).

6428019 is a wasteful number, since it uses less digits than its factorization.

6428019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164837.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 6428019 is about 2535.3538214616. The cubic root of 6428019 is about 185.9341019881.

The spelling of 6428019 in words is "six million, four hundred twenty-eight thousand, nineteen".