7638428404 has 24 divisors (see below), whose sum is σ = 13508094600. Its totient is φ = 3779020800.

The previous prime is 7638428401. The next prime is 7638428417. The reversal of 7638428404 is 4048248367.

It can be written as a sum of positive squares in 4 ways, for example, as 5676115600 + 1962312804 = 75340^2 + 44298^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7638428401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 758152 + ... + 768160.

It is an arithmetic number, because the mean of its divisors is an integer number (562837275).

Almost surely, 2^7638428404 is an apocalyptic number.

It is an amenable number.

7638428404 is a deficient number, since it is larger than the sum of its proper divisors (5869666196).

7638428404 is a wasteful number, since it uses less digits than its factorization.

7638428404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12003 (or 12001 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 46.

The square root of 7638428404 is about 87398.1029771242. The cubic root of 7638428404 is about 1969.4033428890.

The spelling of 7638428404 in words is "seven billion, six hundred thirty-eight million, four hundred twenty-eight thousand, four hundred four".