28649384264 has 16 divisors (see below), whose sum is σ = 53764202220. Its totient is φ = 14312263680.

The previous prime is 28649384237. The next prime is 28649384273. The reversal of 28649384264 is 46248394682.

It can be written as a sum of positive squares in 2 ways, for example, as 27741567364 + 907816900 = 166558^2 + 30130^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1543757 + ... + 1562204.

Almost surely, 2^28649384264 is an apocalyptic number.

It is an amenable number.

28649384264 is a deficient number, since it is larger than the sum of its proper divisors (25114817956).

28649384264 is a wasteful number, since it uses less digits than its factorization.

28649384264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3107120 (or 3107116 counting only the distinct ones).

The product of its digits is 15925248, while the sum is 56.

The spelling of 28649384264 in words is "twenty-eight billion, six hundred forty-nine million, three hundred eighty-four thousand, two hundred sixty-four".