28003219000 has 64 divisors (see below), whose sum is σ = 65599372800. Its totient is φ = 11189008000.

The previous prime is 28003218869. The next prime is 28003219021. The reversal of 28003219000 is 91230082.

It is a super-2 number, since 2×28003219000² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

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 15 ways as a sum of consecutive naturals, for example, 926121 + ... + 955879.

It is an arithmetic number, because the mean of its divisors is an integer number (1024990200).

Almost surely, 2^28003219000 is an apocalyptic number.

28003219000 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 28003219000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32799686400).

28003219000 is an abundant number, since it is smaller than the sum of its proper divisors (37596153800).

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

28003219000 is a wasteful number, since it uses less digits than its factorization.

28003219000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30721 (or 30707 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 28003219000 its reverse (91230082), we get a palindrome (28094449082).

The spelling of 28003219000 in words is "twenty-eight billion, three million, two hundred nineteen thousand".