6438078 has 12 divisors (see below), whose sum is σ = 13949208. Its totient is φ = 2146020.

The previous prime is 6438077. The next prime is 6438079. The reversal of 6438078 is 8708346.

6438078 is a `hidden beast` number, since 643 + 8 + 0 + 7 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (6438077) and next prime (6438079).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6438077) 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 in 5 ways as a sum of consecutive naturals, for example, 178818 + ... + 178853.

It is an arithmetic number, because the mean of its divisors is an integer number (1162434).

Almost surely, 2^6438078 is an apocalyptic number.

6438078 is an abundant number, since it is smaller than the sum of its proper divisors (7511130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6438078 is a wasteful number, since it uses less digits than its factorization.

6438078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357679 (or 357676 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 6438078 is about 2537.3367927810. The cubic root of 6438078 is about 186.0310388714.

The spelling of 6438078 in words is "six million, four hundred thirty-eight thousand, seventy-eight".