28878200200 has 24 divisors (see below), whose sum is σ = 67141815930. Its totient is φ = 11551280000.

The previous prime is 28878200161. The next prime is 28878200201. The reversal of 28878200200 is 200287882.

It can be written as a sum of positive squares in 3 ways, for example, as 13013790084 + 15864410116 = 114078^2 + 125954^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28878200200.

It is not an unprimeable number, because it can be changed into a prime (28878200201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 72195301 + ... + 72195700.

Almost surely, 2^28878200200 is an apocalyptic number.

28878200200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28878200200 is an abundant number, since it is smaller than the sum of its proper divisors (38263615730).

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

28878200200 is a wasteful number, since it uses less digits than its factorization.

28878200200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144391017 (or 144391008 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 37.

The spelling of 28878200200 in words is "twenty-eight billion, eight hundred seventy-eight million, two hundred thousand, two hundred".