28328069000 has 768 divisors, whose sum is σ = 93791692800. Its totient is φ = 7755264000.

The previous prime is 28328068963. The next prime is 28328069059. The reversal of 28328069000 is 96082382.

It is a happy number.

It is a super-2 number, since 2×28328069000² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 422806967 + ... + 422807033.

It is an arithmetic number, because the mean of its divisors is an integer number (122124600).

Almost surely, 2^28328069000 is an apocalyptic number.

28328069000 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 28328069000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46895846400).

28328069000 is an abundant number, since it is smaller than the sum of its proper divisors (65463623800).

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

28328069000 is a wasteful number, since it uses less digits than its factorization.

28328069000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The spelling of 28328069000 in words is "twenty-eight billion, three hundred twenty-eight million, sixty-nine thousand".