28340736625688 has 16 divisors (see below), whose sum is σ = 54039540177000. Its totient is φ = 13930192578496.

The previous prime is 28340736625687. The next prime is 28340736625693. The reversal of 28340736625688 is 88652663704382.

It is a super-2 number, since 2×28340736625688² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28340736625687) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 30021966293 + ... + 30021967236.

Almost surely, 2^{28340736625688} is an apocalyptic number.

It is an amenable number.

28340736625688 is a deficient number, since it is larger than the sum of its proper divisors (25698803551312).

28340736625688 is a wasteful number, since it uses less digits than its factorization.

28340736625688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60043933594 (or 60043933590 counting only the distinct ones).

The product of its (nonzero) digits is 557383680, while the sum is 68.

The spelling of 28340736625688 in words is "twenty-eight trillion, three hundred forty billion, seven hundred thirty-six million, six hundred twenty-five thousand, six hundred eighty-eight".