28975200000 has 216 divisors, whose sum is σ = 96397173936. Its totient is φ = 7726080000.

The previous prime is 28975199977. The next prime is 28975200029. The reversal of 28975200000 is 257982.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2393964 + ... + 2406036.

Almost surely, 2^28975200000 is an apocalyptic number.

28975200000 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 28975200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48198586968).

28975200000 is an abundant number, since it is smaller than the sum of its proper divisors (67421973936).

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

28975200000 is an frugal number, since it uses more digits than its factorization.

28975200000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12117 (or 12083 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

Adding to 28975200000 its reverse (257982), we get a palindrome (28975457982).

The spelling of 28975200000 in words is "twenty-eight billion, nine hundred seventy-five million, two hundred thousand".