28289547000 has 1024 divisors, whose sum is σ = 122276044800. Its totient is φ = 5944320000.

The previous prime is 28289546977. The next prime is 28289547029. The reversal of 28289547000 is 74598282.

28289547000 is a `hidden beast` number, since 28 + 2 + 89 + 547 + 0 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

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 255 ways as a sum of consecutive naturals, for example, 65636785 + ... + 65637215.

It is an arithmetic number, because the mean of its divisors is an integer number (119410200).

Almost surely, 2^28289547000 is an apocalyptic number.

28289547000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28289547000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61138022400).

28289547000 is an abundant number, since it is smaller than the sum of its proper divisors (93986497800).

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

28289547000 is a wasteful number, since it uses less digits than its factorization.

28289547000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502 (or 482 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 28289547000 in words is "twenty-eight billion, two hundred eighty-nine million, five hundred forty-seven thousand".