28530304000 has 352 divisors, whose sum is σ = 81115437312. Its totient is φ = 9912320000.

The previous prime is 28530303959. The next prime is 28530304007. The reversal of 28530304000 is 40303582.

It is a tau number, because it is divible by the number of its divisors (352).

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

It is not an unprimeable number, because it can be changed into a prime (28530304007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32383560 + ... + 32384440.

Almost surely, 2^28530304000 is an apocalyptic number.

28530304000 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 28530304000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40557718656).

28530304000 is an abundant number, since it is smaller than the sum of its proper divisors (52585133312).

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

28530304000 is a wasteful number, since it uses less digits than its factorization.

28530304000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950 (or 922 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 28530304000 its reverse (40303582), we get a palindrome (28570607582).

The spelling of 28530304000 in words is "twenty-eight billion, five hundred thirty million, three hundred four thousand".