28626373531044 has 81 divisors (see below), whose sum is σ = 76371663928833. Its totient is φ = 9039714817824.

The previous prime is 28626373531039. The next prime is 28626373531127. The reversal of 28626373531044 is 44013537362682.

The square root of 28626373531044 is 5350362.

It is a perfect power (a square), and thus also a powerful number.

28626373531044 is a `hidden beast` number, since 2 + 8 + 6 + 2 + 63 + 7 + 3 + 531 + 0 + 44 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1016729388900 + 27609644142144 = 1008330^2 + 5254488^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 609917802 + ... + 609964734.

Almost surely, 2^{28626373531044} is an apocalyptic number.

28626373531044 is the 5350362-nd square number.

It is an amenable number.

28626373531044 is an abundant number, since it is smaller than the sum of its proper divisors (47745290397789).

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

28626373531044 is an frugal number, since it uses more digits than its factorization.

28626373531044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93914 (or 46957 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 54.

The spelling of 28626373531044 in words is "twenty-eight trillion, six hundred twenty-six billion, three hundred seventy-three million, five hundred thirty-one thousand, forty-four".