74128678 has 32 divisors (see below), whose sum is σ = 126173376. Its totient is φ = 32406528.

The previous prime is 74128673. The next prime is 74128679. The reversal of 74128678 is 87682147.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74128673) 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 15 ways as a sum of consecutive naturals, for example, 67026 + ... + 68122.

It is an arithmetic number, because the mean of its divisors is an integer number (3942918).

Almost surely, 2^74128678 is an apocalyptic number.

74128678 is a deficient number, since it is larger than the sum of its proper divisors (52044698).

74128678 is a wasteful number, since it uses less digits than its factorization.

74128678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1248.

The product of its digits is 150528, while the sum is 43.

The square root of 74128678 is about 8609.8012752909. The cubic root of 74128678 is about 420.0768529054.

The spelling of 74128678 in words is "seventy-four million, one hundred twenty-eight thousand, six hundred seventy-eight".