27984479800 has 48 divisors (see below), whose sum is σ = 65075198760. Its totient is φ = 11191850880.

The previous prime is 27984479797. The next prime is 27984479819. The reversal of 27984479800 is 897448972.

It is a super-2 number, since 2×27984479800² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1879987 + ... + 1894813.

Almost surely, 2^27984479800 is an apocalyptic number.

27984479800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27984479800 is an abundant number, since it is smaller than the sum of its proper divisors (37090718960).

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

27984479800 is a wasteful number, since it uses less digits than its factorization.

27984479800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24280 (or 24271 counting only the distinct ones).

The product of its (nonzero) digits is 8128512, while the sum is 58.

The spelling of 27984479800 in words is "twenty-seven billion, nine hundred eighty-four million, four hundred seventy-nine thousand, eight hundred".