28027155200 has 108 divisors (see below), whose sum is σ = 75678286488. Its totient is φ = 10191667200.

The previous prime is 28027155199. The next prime is 28027155203. The reversal of 28027155200 is 255172082.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (28027155203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 128657 + ... + 269456.

Almost surely, 2^28027155200 is an apocalyptic number.

28027155200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28027155200 is an abundant number, since it is smaller than the sum of its proper divisors (47651131288).

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

28027155200 is a wasteful number, since it uses less digits than its factorization.

28027155200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398150 (or 398131 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 32.

The spelling of 28027155200 in words is "twenty-eight billion, twenty-seven million, one hundred fifty-five thousand, two hundred".