6428078 has 4 divisors (see below), whose sum is σ = 9642120. Its totient is φ = 3214038.

The previous prime is 6428041. The next prime is 6428083. The reversal of 6428078 is 8708246.

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

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1607018 + ... + 1607021.

It is an arithmetic number, because the mean of its divisors is an integer number (2410530).

Almost surely, 2^6428078 is an apocalyptic number.

6428078 is a deficient number, since it is larger than the sum of its proper divisors (3214042).

6428078 is a wasteful number, since it uses less digits than its factorization.

6428078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3214041.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 6428078 is about 2535.3654568918. The cubic root of 6428078 is about 185.9346708559.

The spelling of 6428078 in words is "six million, four hundred twenty-eight thousand, seventy-eight".