28178448200 has 96 divisors (see below), whose sum is σ = 77289576960. Its totient is φ = 9349516800.

The previous prime is 28178448163. The next prime is 28178448239. The reversal of 28178448200 is 284487182.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 281237 + ... + 368036.

It is an arithmetic number, because the mean of its divisors is an integer number (805099760).

Almost surely, 2^28178448200 is an apocalyptic number.

28178448200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28178448200 is an abundant number, since it is smaller than the sum of its proper divisors (49111128760).

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

28178448200 is a wasteful number, since it uses less digits than its factorization.

28178448200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649327 (or 649318 counting only the distinct ones).

The product of its (nonzero) digits is 229376, while the sum is 44.

The spelling of 28178448200 in words is "twenty-eight billion, one hundred seventy-eight million, four hundred forty-eight thousand, two hundred".