28115515350228 has 48 divisors (see below), whose sum is σ = 66193642420416. Its totient is φ = 9287467875840.

The previous prime is 28115515350187. The next prime is 28115515350313. The reversal of 28115515350228 is 82205351551182.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7204650 + ... + 10398942.

It is an arithmetic number, because the mean of its divisors is an integer number (1379034217092).

Almost surely, 2^{28115515350228} is an apocalyptic number.

It is an amenable number.

28115515350228 is an abundant number, since it is smaller than the sum of its proper divisors (38078127070188).

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

28115515350228 is a wasteful number, since it uses less digits than its factorization.

28115515350228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3200904 (or 3200902 counting only the distinct ones).

The product of its (nonzero) digits is 960000, while the sum is 48.

The spelling of 28115515350228 in words is "twenty-eight trillion, one hundred fifteen billion, five hundred fifteen million, three hundred fifty thousand, two hundred twenty-eight".