27898490000 has 50 divisors (see below), whose sum is σ = 67545058350. Its totient is φ = 11159392000.

The previous prime is 27898489987. The next prime is 27898490027. The reversal of 27898490000 is 9489872.

It can be written as a sum of positive squares in 5 ways, for example, as 18614782096 + 9283707904 = 136436^2 + 96352^2 .

It is a tau number, because it is divible by the number of its divisors (50).

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 1384925 + ... + 1404924.

It is an arithmetic number, because the mean of its divisors is an integer number (1350901167).

Almost surely, 2^27898490000 is an apocalyptic number.

27898490000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27898490000 is an abundant number, since it is smaller than the sum of its proper divisors (39646568350).

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

27898490000 is an equidigital number, since it uses as much as digits as its factorization.

27898490000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2789877 (or 2789856 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 47.

The spelling of 27898490000 in words is "twenty-seven billion, eight hundred ninety-eight million, four hundred ninety thousand".