28289545511500 has 144 divisors (see below), whose sum is σ = 77400197390880. Its totient is φ = 8953174742400.

The previous prime is 28289545511459. The next prime is 28289545511501. The reversal of 28289545511500 is 511554598282.

It is a super-3 number, since 3×28289545511500³ (a number of 41 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (28289545511501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 44092090 + ... + 44729089.

It is an arithmetic number, because the mean of its divisors is an integer number (537501370770).

Almost surely, 2^{28289545511500} is an apocalyptic number.

28289545511500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28289545511500 is an abundant number, since it is smaller than the sum of its proper divisors (49110651879380).

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

28289545511500 is a wasteful number, since it uses less digits than its factorization.

28289545511500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88821225 (or 88821206 counting only the distinct ones).

The product of its (nonzero) digits is 5760000, while the sum is 55.

The spelling of 28289545511500 in words is "twenty-eight trillion, two hundred eighty-nine billion, five hundred forty-five million, five hundred eleven thousand, five hundred".