28389548497800 has 192 divisors, whose sum is σ = 104048394940800. Its totient is φ = 6265279641600.

The previous prime is 28389548497789. The next prime is 28389548497813. The reversal of 28389548497800 is 879484598382.

It is a Harshad number since it is a multiple of its sum of digits (75).

It is an unprimeable number.

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, 116419861 + ... + 116663460.

It is an arithmetic number, because the mean of its divisors is an integer number (541918723650).

Almost surely, 2^{28389548497800} is an apocalyptic number.

28389548497800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28389548497800 is an abundant number, since it is smaller than the sum of its proper divisors (75658846443000).

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

28389548497800 is a wasteful number, since it uses less digits than its factorization.

28389548497800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233083376 (or 233083367 counting only the distinct ones).

The product of its (nonzero) digits is 1114767360, while the sum is 75.

The spelling of 28389548497800 in words is "twenty-eight trillion, three hundred eighty-nine billion, five hundred forty-eight million, four hundred ninety-seven thousand, eight hundred".