28649115966 has 16 divisors (see below), whose sum is σ = 58695750288. Its totient is φ = 9316785600.

The previous prime is 28649115889. The next prime is 28649116079. The reversal of 28649115966 is 66951194682.

It is a super-2 number, since 2×28649115966² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58229665 + ... + 58230156.

It is an arithmetic number, because the mean of its divisors is an integer number (3668484393).

Almost surely, 2^28649115966 is an apocalyptic number.

28649115966 is an abundant number, since it is smaller than the sum of its proper divisors (30046634322).

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

28649115966 is a wasteful number, since it uses less digits than its factorization.

28649115966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116459867.

The product of its digits is 5598720, while the sum is 57.

The spelling of 28649115966 in words is "twenty-eight billion, six hundred forty-nine million, one hundred fifteen thousand, nine hundred sixty-six".