28300282500 has 480 divisors, whose sum is σ = 102669735168. Its totient is φ = 5916672000.

The previous prime is 28300282499. The next prime is 28300282501. The reversal of 28300282500 is 528200382.

It is an interprime number because it is at equal distance from previous prime (28300282499) and next prime (28300282501).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (28300282501) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 33022072 + ... + 33022928.

Almost surely, 2^28300282500 is an apocalyptic number.

28300282500 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 28300282500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51334867584).

28300282500 is an abundant number, since it is smaller than the sum of its proper divisors (74369452668).

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

28300282500 is a wasteful number, since it uses less digits than its factorization.

28300282500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945 (or 928 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

Adding to 28300282500 its reverse (528200382), we get a palindrome (28828482882).

The spelling of 28300282500 in words is "twenty-eight billion, three hundred million, two hundred eighty-two thousand, five hundred".